#include "stdafx.h"
#include "RSXThread.h"

#include "Capture/rsx_capture.h"
#include "Common/surface_store.h"
#include "Core/RSXReservationLock.hpp"
#include "Core/RSXEngLock.hpp"
#include "Host/MM.h"
#include "Host/RSXDMAWriter.h"
#include "NV47/HW/context.h"
#include "Program/GLSLCommon.h"
#include "rsx_methods.h"

#include "gcm_printing.h"
#include "RSXDisAsm.h"

#include "Emu/System.h"
#include "Emu/Cell/PPUThread.h"
#include "Emu/Cell/timers.hpp"
#include "Emu/Cell/lv2/sys_event.h"
#include "Emu/Cell/lv2/sys_time.h"
#include "rpcsx/fw/ps3/cellGcmSys.h"
#include "util/serialization_ext.hpp"
#include "Overlays/overlay_perf_metrics.h"
#include "Overlays/overlay_debug_overlay.h"
#include "Overlays/overlay_manager.h"

#include "util/date_time.h"

#include "util/asm.hpp"

#include <span>
#include <thread>
#include <unordered_set>

class GSRender;

#define CMD_DEBUG 0

atomic_t<bool> g_user_asked_for_recording = false;
atomic_t<bool> g_user_asked_for_screenshot = false;
atomic_t<bool> g_user_asked_for_frame_capture = false;
atomic_t<bool> g_disable_frame_limit = false;
rsx::frame_trace_data frame_debug;
rsx::frame_capture_data frame_capture;

extern CellGcmOffsetTable offsetTable;
extern thread_local std::string (*g_tls_log_prefix)();
extern atomic_t<u32> g_lv2_preempts_taken;

LOG_CHANNEL(perf_log, "PERF");

template <>
bool serialize<rsx::rsx_state>(utils::serial& ar, rsx::rsx_state& o)
{
	ar(o.transform_program);

	// Work around for old RSX captures.
	// RSX capture and savestates both call this method.
	// We do not want to grab transform constants if it is not savestate capture.
	const bool is_savestate_capture = thread_ctrl::get_current() && thread_ctrl::get_name() == "Emu State Capture Thread";
	if (GET_SERIALIZATION_VERSION(global_version) || is_savestate_capture)
	{
		ar(o.transform_constants);
	}

	return ar(o.registers);
}

template <>
bool serialize<rsx::frame_capture_data>(utils::serial& ar, rsx::frame_capture_data& o)
{
	ar(o.magic, o.version, o.LE_format);

	if (o.magic != rsx::c_fc_magic || o.version != rsx::c_fc_version || o.LE_format != u32{std::endian::little == std::endian::native})
	{
		return false;
	}

	return ar(o.tile_map, o.memory_map, o.memory_data_map, o.display_buffers_map, o.replay_commands, o.reg_state);
}

template <>
bool serialize<rsx::frame_capture_data::memory_block_data>(utils::serial& ar, rsx::frame_capture_data::memory_block_data& o)
{
	return ar(o.data);
}

template <>
bool serialize<rsx::frame_capture_data::replay_command>(utils::serial& ar, rsx::frame_capture_data::replay_command& o)
{
	return ar(o.rsx_command, o.memory_state, o.tile_state, o.display_buffer_state);
}

template <>
bool serialize<rsx::rsx_iomap_table>(utils::serial& ar, rsx::rsx_iomap_table& o)
{
	// We do not need more than that
	ar(std::span(o.ea.data(), 512));

	if (!ar.is_writing())
	{
		// Populate o.io
		for (const atomic_t<u32>& ea_addr : o.ea)
		{
			const u32& addr = ea_addr.raw();

			if (addr != umax)
			{
				o.io[addr >> 20].raw() = static_cast<u32>(&ea_addr - o.ea.data()) << 20;
			}
		}
	}

	return true;
}

namespace rsx
{
	std::function<bool(u32 addr, bool is_writing)> g_access_violation_handler;

	// TODO: Proper context manager
	static rsx::context s_ctx{.rsxthr = nullptr, .register_state = &method_registers};

	rsx_iomap_table::rsx_iomap_table() noexcept
		: ea(fill_array(-1)), io(fill_array(-1))
	{
	}

	u32 get_address(u32 offset, u32 location, u32 size_to_check, std::source_location src_loc)
	{
		const auto render = get_current_renderer();
		std::string_view msg;

		switch (location)
		{
		case CELL_GCM_CONTEXT_DMA_MEMORY_FRAME_BUFFER:
		case CELL_GCM_LOCATION_LOCAL:
		{
			if (offset < render->local_mem_size && render->local_mem_size - offset >= size_to_check)
			{
				return rsx::constants::local_mem_base + offset;
			}

			msg = "Local RSX offset out of range!"sv;
			break;
		}

		case CELL_GCM_CONTEXT_DMA_MEMORY_HOST_BUFFER:
		case CELL_GCM_LOCATION_MAIN:
		{
			if (const u32 ea = render->iomap_table.get_addr(offset); ea + 1)
			{
				if (!size_to_check || vm::check_addr(ea, 0, size_to_check))
				{
					return ea;
				}
			}

			msg = "RSXIO memory not mapped!"sv;
			break;
		}

		case CELL_GCM_CONTEXT_DMA_REPORT_LOCATION_LOCAL:
		{
			if (offset < sizeof(RsxReports::report) /*&& (offset % 0x10) == 0*/)
			{
				return render->label_addr + OFFSET_OF(RsxReports, report) + offset;
			}

			msg = "Local RSX REPORT offset out of range!"sv;
			break;
		}

		case CELL_GCM_CONTEXT_DMA_REPORT_LOCATION_MAIN:
		{
			if (const u32 ea = offset < 0x1000000 ? render->iomap_table.get_addr(0x0e000000 + offset) : -1; ea + 1)
			{
				if (!size_to_check || vm::check_addr(ea, 0, size_to_check))
				{
					return ea;
				}
			}

			msg = "RSXIO REPORT memory not mapped!"sv;
			break;
		}

		// They are handled elsewhere for targeted methods, so it's unexpected for them to be passed here
		case CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFY0:
		case CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFY1:
		case CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFY2:
		case CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFY3:
		case CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFY4:
		case CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFY5:
		case CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFY6:
		case CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFY7:
			msg = "CELL_GCM_CONTEXT_DMA_TO_MEMORY_GET_NOTIFYx"sv;
			break;

		case CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_0:
		case CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_1:
		case CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_2:
		case CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_3:
		case CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_4:
		case CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_5:
		case CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_6:
		case CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_7:
			msg = "CELL_GCM_CONTEXT_DMA_NOTIFY_MAIN_x"sv;
			break;

		case CELL_GCM_CONTEXT_DMA_SEMAPHORE_RW:
		case CELL_GCM_CONTEXT_DMA_SEMAPHORE_R:
		{
			if (offset < sizeof(RsxReports::semaphore) /*&& (offset % 0x10) == 0*/)
			{
				return render->label_addr + offset;
			}

			msg = "DMA SEMAPHORE offset out of range!"sv;
			break;
		}

		case CELL_GCM_CONTEXT_DMA_DEVICE_RW:
		case CELL_GCM_CONTEXT_DMA_DEVICE_R:
		{
			if (offset < 0x100000 /*&& (offset % 0x10) == 0*/)
			{
				return render->device_addr + offset;
			}

			// TODO: What happens here? It could wrap around or access other segments of rsx internal memory etc
			// Or can simply throw access violation error
			msg = "DMA DEVICE offset out of range!"sv;
			break;
		}

		default:
		{
			msg = "Invalid location!"sv;
			break;
		}
		}

		if (size_to_check)
		{
			// Allow failure if specified size
			// This is to allow accurate recovery for failures
			rsx_log.warning("rsx::get_address(offset=0x%x, location=0x%x, size=0x%x): %s%s", offset, location, size_to_check, msg, src_loc);
			return 0;
		}

		fmt::throw_exception("rsx::get_address(offset=0x%x, location=0x%x): %s%s", offset, location, msg, src_loc);
	}

	extern void set_rsx_yield_flag() noexcept
	{
		if (auto rsx = get_current_renderer())
		{
			if (g_cfg.core.allow_rsx_cpu_preempt)
			{
				rsx->state += cpu_flag::yield;
			}
		}
	}

	extern void set_native_ui_flip()
	{
		if (auto rsxthr = rsx::get_current_renderer())
		{
			rsxthr->async_flip_requested |= rsx::thread::flip_request::native_ui;
		}
	}

	std::pair<u32, u32> interleaved_range_info::calculate_required_range(u32 first, u32 count)
	{
		if (vertex_range.second)
		{
			// Cached result
			return vertex_range;
		}

		if (single_vertex)
		{
			return {0, 1};
		}

		const u32 max_index = (first + count) - 1;
		u32 _max_index = 0;
		u32 _min_index = first;

		u32 frequencies[rsx::limits::vertex_count];
		u32 freq_count = rsx::method_registers.current_draw_clause.command == rsx::draw_command::indexed ? 0 : u32{umax};
		u32 max_result_by_division = 0; // Guaranteed maximum

		for (const auto& attrib : locations)
		{
			if (attrib.frequency <= 1) [[likely]]
			{
				freq_count = umax;
				_max_index = max_index;
			}
			else
			{
				if (attrib.modulo)
				{
					if (max_index >= attrib.frequency)
					{
						// Actually uses the modulo operator
						_min_index = 0;
						_max_index = std::max<u32>(_max_index, attrib.frequency - 1);

						if (max_result_by_division < _max_index)
						{
							if (freq_count != umax)
							{
								if (std::find(frequencies, frequencies + freq_count, attrib.frequency) == frequencies + freq_count)
								{
									frequencies[freq_count++] = attrib.frequency;
								}
							}
						}
					}
					else
					{
						// Same as having no modulo
						_max_index = max_index;
						freq_count = umax;
					}
				}
				else
				{
					// Division operator
					_min_index = std::min(_min_index, first / attrib.frequency);
					_max_index = std::max<u32>(_max_index, utils::aligned_div(max_index, attrib.frequency));

					if (freq_count > 0 && freq_count != umax)
					{
						const u32 max = utils::aligned_div(max_index, attrib.frequency);
						max_result_by_division = std::max<u32>(max_result_by_division, max);

						// Discard lower frequencies because it has been proven that there are indices higher than them
						const usz discard_cnt = frequencies + freq_count - std::remove_if(frequencies, frequencies + freq_count, [&max_result_by_division](u32 freq)
																			   {
																				   return freq <= max_result_by_division;
																			   });

						freq_count -= static_cast<u32>(discard_cnt);
					}
				}
			}
		}

		while (freq_count > 0 && freq_count != umax)
		{
			const rsx::index_array_type index_type = rsx::method_registers.current_draw_clause.is_immediate_draw ?
			                                             rsx::index_array_type::u32 :
			                                             rsx::method_registers.index_type();

			const u32 index_size = index_type == rsx::index_array_type::u32 ? 4 : 2;

			const auto render = rsx::get_current_renderer();

			// If we can access a bit a more memory than required - do it
			// The alternative would be re-iterating again over all of them
			if (get_location(real_offset_address) == CELL_GCM_LOCATION_LOCAL)
			{
				if (utils::add_saturate<u32>(real_offset_address - rsx::constants::local_mem_base, (_max_index + 1) * attribute_stride) <= render->local_mem_size)
				{
					break;
				}
			}
			else if (real_offset_address % 0x100000 + (_max_index + 1) * attribute_stride <= 0x100000) //(vm::check_addr(real_offset_address, vm::page_readable, (_max_index + 1) * attribute_stride))
			{
				break;
			}

			_max_index = 0;

			auto re_evaluate = [&]<typename T>(const std::byte* ptr, T)
			{
				const u64 restart = rsx::method_registers.restart_index_enabled() ? rsx::method_registers.restart_index() : u64{umax};

				for (u32 _index = first; _index < first + count; _index++)
				{
					const auto value = read_from_ptr<be_t<T>>(ptr, _index * sizeof(T));

					if (value == restart)
					{
						continue;
					}

					for (u32 freq_it = 0; freq_it < freq_count; freq_it++)
					{
						const auto res = value % frequencies[freq_it];

						if (res > _max_index)
						{
							_max_index = res;
						}
					}
				}
			};

			const auto element_push_buffer = render->draw_processor()->element_push_buffer();
			if (index_size == 4)
			{
				if (!element_push_buffer.empty()) [[unlikely]]
				{
					// Indices provided via immediate mode
					re_evaluate(reinterpret_cast<const std::byte*>(element_push_buffer.data()), u32{});
				}
				else
				{
					const u32 address = (0 - index_size) & get_address(rsx::method_registers.index_array_address(), rsx::method_registers.index_array_location());
					re_evaluate(vm::get_super_ptr<std::byte>(address), u32{});
				}
			}
			else
			{
				if (!element_push_buffer.empty()) [[unlikely]]
				{
					// Indices provided via immediate mode
					re_evaluate(reinterpret_cast<const std::byte*>(element_push_buffer.data()), u16{});
				}
				else
				{
					const u32 address = (0 - index_size) & get_address(rsx::method_registers.index_array_address(), rsx::method_registers.index_array_location());
					re_evaluate(vm::get_super_ptr<std::byte>(address), u16{});
				}
			}

			break;
		}

		ensure(_max_index >= _min_index);
		vertex_range = {_min_index, (_max_index - _min_index) + 1};
		return vertex_range;
	}

	u32 get_vertex_type_size_on_host(vertex_base_type type, u32 size)
	{
		switch (type)
		{
		case vertex_base_type::s1:
		case vertex_base_type::s32k:
			switch (size)
			{
			case 1:
			case 2:
			case 4:
				return sizeof(u16) * size;
			case 3:
				return sizeof(u16) * 4;
			default:
				break;
			}
			fmt::throw_exception("Wrong vector size");
		case vertex_base_type::f: return sizeof(f32) * size;
		case vertex_base_type::sf:
			switch (size)
			{
			case 1:
			case 2:
			case 4:
				return sizeof(f16) * size;
			case 3:
				return sizeof(f16) * 4;
			default:
				break;
			}
			fmt::throw_exception("Wrong vector size");
		case vertex_base_type::ub:
			switch (size)
			{
			case 1:
			case 2:
			case 4:
				return sizeof(u8) * size;
			case 3:
				return sizeof(u8) * 4;
			default:
				break;
			}
			fmt::throw_exception("Wrong vector size");
		case vertex_base_type::cmp: return 4;
		case vertex_base_type::ub256: ensure(size == 4); return sizeof(u8) * 4;
		default:
			break;
		}
		fmt::throw_exception("Bad vertex data type (%d)!", static_cast<u8>(type));
	}

	void tiled_region::write(const void* src, u32 width, u32 height, u32 pitch)
	{
		if (!tile)
		{
			memcpy(ptr, src, height * pitch);
			return;
		}

		const u32 offset_x = base % tile->pitch;
		const u32 offset_y = base / tile->pitch;

		switch (tile->comp)
		{
		case CELL_GCM_COMPMODE_C32_2X1:
		case CELL_GCM_COMPMODE_DISABLED:
			for (u32 y = 0; y < height; ++y)
			{
				memcpy(ptr + (offset_y + y) * tile->pitch + offset_x, static_cast<const u8*>(src) + pitch * y, pitch);
			}
			break;
			/*
		case CELL_GCM_COMPMODE_C32_2X1:
			for (u32 y = 0; y < height; ++y)
			{
			    const u32* src_line = reinterpret_cast<const u32*>(static_cast<const u8*>(src) + pitch * y);
			    u32* dst_line = reinterpret_cast<u32*>(ptr + (offset_y + y) * tile->pitch + offset_x);

			    for (u32 x = 0; x < width; ++x)
			    {
			        u32 value = src_line[x];

			        dst_line[x * 2 + 0] = value;
			        dst_line[x * 2 + 1] = value;
			    }
			}
			break;
			*/
		case CELL_GCM_COMPMODE_C32_2X2:
			for (u32 y = 0; y < height; ++y)
			{
				const u32* src_line = reinterpret_cast<const u32*>(static_cast<const u8*>(src) + pitch * y);
				u32* line_0 = reinterpret_cast<u32*>(ptr + (offset_y + y * 2 + 0) * tile->pitch + offset_x);
				u32* line_1 = reinterpret_cast<u32*>(ptr + (offset_y + y * 2 + 1) * tile->pitch + offset_x);

				for (u32 x = 0; x < width; ++x)
				{
					u32 value = src_line[x];

					line_0[x * 2 + 0] = value;
					line_0[x * 2 + 1] = value;
					line_1[x * 2 + 0] = value;
					line_1[x * 2 + 1] = value;
				}
			}
			break;
		default:
			fmt::throw_exception("Bad tile compression type (%d)!", tile->comp);
		}
	}

	void tiled_region::read(void* dst, u32 width, u32 height, u32 pitch)
	{
		if (!tile)
		{
			memcpy(dst, ptr, height * pitch);
			return;
		}

		u32 offset_x = base % tile->pitch;
		u32 offset_y = base / tile->pitch;

		switch (tile->comp)
		{
		case CELL_GCM_COMPMODE_C32_2X1:
		case CELL_GCM_COMPMODE_DISABLED:
			for (u32 y = 0; y < height; ++y)
			{
				memcpy(static_cast<u8*>(dst) + pitch * y, ptr + (offset_y + y) * tile->pitch + offset_x, pitch);
			}
			break;
			/*
		case CELL_GCM_COMPMODE_C32_2X1:
			for (u32 y = 0; y < height; ++y)
			{
			    const u32* src_line = reinterpret_cast<const u32*>(ptr + (offset_y + y) * tile->pitch + offset_x);
			    u32* dst_line = reinterpret_cast<u32*>(static_cast<u8*>(dst) + pitch * y);

			    for (u32 x = 0; x < width; ++x)
			    {
			        dst_line[x] = src_line[x * 2 + 0];
			    }
			}
			break;
			*/
		case CELL_GCM_COMPMODE_C32_2X2:
			for (u32 y = 0; y < height; ++y)
			{
				const u32* src_line = reinterpret_cast<const u32*>(ptr + (offset_y + y * 2 + 0) * tile->pitch + offset_x);
				u32* dst_line = reinterpret_cast<u32*>(static_cast<u8*>(dst) + pitch * y);

				for (u32 x = 0; x < width; ++x)
				{
					dst_line[x] = src_line[x * 2 + 0];
				}
			}
			break;
		default:
			fmt::throw_exception("Bad tile compression type (%d)!", tile->comp);
		}
	}

	thread::~thread()
	{
		g_access_violation_handler = nullptr;
	}

	void thread::save(utils::serial& ar)
	{
		[[maybe_unused]] const s32 version = GET_OR_USE_SERIALIZATION_VERSION(ar.is_writing(), rsx);

		ar(rsx::method_registers);

		for (auto& v : m_draw_processor.m_vertex_push_buffers)
		{
			ar(v.attr, v.size, v.type, v.vertex_count, v.dword_count, v.data);
		}

		ar(m_draw_processor.m_element_push_buffer, fifo_ret_addr, saved_fifo_ret, zcull_surface_active, m_surface_info, m_depth_surface_info, m_framebuffer_layout);
		ar(dma_address, iomap_table, restore_point, tiles, zculls, display_buffers, display_buffers_count, current_display_buffer);
		ar(enable_second_vhandler, requested_vsync);
		ar(device_addr, label_addr, main_mem_size, local_mem_size, rsx_event_port, driver_info);
		ar(in_begin_end);
		ar(display_buffers, display_buffers_count, current_display_buffer);
		ar(unsent_gcm_events, rsx::method_registers.current_draw_clause);

		if (ar.is_writing() || version >= 2)
		{
			ar(vblank_count);

			b8 flip_pending{};

			if (ar.is_writing())
			{
				flip_pending = !!(async_flip_requested & flip_request::emu_requested);
			}

			ar(flip_pending);

			if (flip_pending)
			{
				ar(vblank_at_flip);
				ar(async_flip_buffer);

				if (!ar.is_writing())
				{
					async_flip_requested |= flip_request::emu_requested;
					flip_notification_count = 1;
				}
			}
		}

		if (ar.is_writing())
		{
			if (fifo_ctrl && state & cpu_flag::again)
			{
				ar(fifo_ctrl->get_remaining_args_count() + 1);
				ar(fifo_ctrl->last_cmd());
			}
			else
			{
				ar(u32{0});
			}
		}
		else if (u32 count = ar)
		{
			restore_fifo_count = count;
			ar(restore_fifo_cmd);
		}
	}

	thread::thread(utils::serial* _ar)
		: cpu_thread(0x5555'5555)
	{
		g_access_violation_handler = [this](u32 address, bool is_writing)
		{
			return on_access_violation(address, is_writing);
		};

		m_textures_dirty.fill(true);
		m_vertex_textures_dirty.fill(true);

		m_graphics_state |= pipeline_state::all_dirty;

		g_user_asked_for_frame_capture = false;

		// TODO: Proper context management in the driver
		s_ctx.rsxthr = this;
		m_ctx = &s_ctx;

		m_draw_processor.init(m_ctx);

		if (g_cfg.misc.use_native_interface && (g_cfg.video.renderer == video_renderer::opengl || g_cfg.video.renderer == video_renderer::vulkan))
		{
			m_overlay_manager = g_fxo->init<rsx::overlays::display_manager>(0);
		}

		if (!_ar)
		{
			add_remove_flags({}, cpu_flag::stop); // TODO: Remove workaround
			return;
		}

		add_remove_flags(cpu_flag::suspend, cpu_flag::stop);

		serialized = true;
		save(*_ar);

		if (dma_address)
		{
			ctrl = vm::_ptr<RsxDmaControl>(dma_address);
			rsx_thread_running = true;
		}

		if (g_cfg.savestate.start_paused)
		{
			// Allow to render a whole frame within this emulation session so there won't be missing graphics
			m_pause_after_x_flips = 2;
		}
	}

	avconf::avconf(utils::serial& ar)
	{
		save(ar);
	}

	void avconf::save(utils::serial& ar)
	{
		[[maybe_unused]] const s32 version = GET_OR_USE_SERIALIZATION_VERSION(ar.is_writing(), rsx);

		if (!ar.is_writing() && version < 3)
		{
			// Be compatible with previous bitwise serialization
			ar(std::span<u8>(reinterpret_cast<u8*>(this), OFFSET_OF(avconf, scan_mode)));
			ar.pos += utils::align<usz>(OFFSET_OF(avconf, scan_mode), alignof(avconf)) - OFFSET_OF(avconf, scan_mode);
			return;
		}

		ar(stereo_mode, format, aspect, resolution_id, scanline_pitch, gamma, resolution_x, resolution_y, state, scan_mode);
	}

	void thread::capture_frame(const std::string& name)
	{
		frame_trace_data::draw_state draw_state{};

		draw_state.programs = get_programs();
		draw_state.name = name;
		frame_debug.draw_calls.emplace_back(std::move(draw_state));
	}

	void thread::begin()
	{
		if (cond_render_ctrl.hw_cond_active)
		{
			if (!cond_render_ctrl.eval_pending())
			{
				// End conditional rendering if still active
				end_conditional_rendering();
			}

			// If hw cond render is enabled and evalutation is still pending, do nothing
		}
		else if (cond_render_ctrl.eval_pending())
		{
			// Evaluate conditional rendering test or enable hw cond render until results are available
			if (backend_config.supports_hw_conditional_render)
			{
				// In this mode, it is possible to skip the cond render while the backend is still processing data.
				// The backend guarantees that any draw calls emitted during this time will NOT generate any ROP writes
				ensure(!cond_render_ctrl.hw_cond_active);

				// Pending evaluation, use hardware test
				begin_conditional_rendering(cond_render_ctrl.eval_sources);
			}
			else
			{
				// NOTE: eval_sources list is reversed with newest query first
				zcull_ctrl->read_barrier(this, cond_render_ctrl.eval_address, cond_render_ctrl.eval_sources.front());
				ensure(!cond_render_ctrl.eval_pending());
			}
		}

		if (!backend_config.supports_normalized_barycentrics)
		{
			// Check for mode change between rasterized polys vs lines and points
			// Luckily this almost never happens in real games
			const auto current_mode = rsx::method_registers.current_draw_clause.classify_mode();
			if (current_mode != m_current_draw_mode)
			{
				m_graphics_state |= (rsx::vertex_program_state_dirty | rsx::fragment_program_state_dirty);
				m_current_draw_mode = current_mode;
			}
		}

		in_begin_end = true;
	}

	void thread::end()
	{
		if (capture_current_frame)
		{
			capture::capture_draw_memory(this);
		}

		in_begin_end = false;
		m_frame_stats.draw_calls++;

		method_registers.current_draw_clause.post_execute_cleanup(m_ctx);

		m_graphics_state |= rsx::pipeline_state::framebuffer_reads_dirty;
		m_eng_interrupt_mask |= rsx::backend_interrupt;
		ROP_sync_timestamp = rsx::get_shared_tag();

		m_draw_processor.clear_push_buffers();

		zcull_ctrl->on_draw();

		if (capture_current_frame)
		{
			u32 element_count = rsx::method_registers.current_draw_clause.get_elements_count();
			capture_frame(fmt::format("Draw %s %d", rsx::method_registers.current_draw_clause.primitive, element_count));
		}
	}

	void thread::execute_nop_draw()
	{
		method_registers.current_draw_clause.begin();
		do
		{
			method_registers.current_draw_clause.execute_pipeline_dependencies(m_ctx);
		} while (method_registers.current_draw_clause.next());
	}

	void thread::cpu_task()
	{
		while (Emu.IsReady())
		{
			thread_ctrl::wait_for(1000);
		}

		do
		{
			on_task();

			state -= cpu_flag::ret;
		} while (!is_stopped());

		on_exit();
	}

	void thread::cpu_wait(bs_t<cpu_flag> old)
	{
		if (external_interrupt_lock)
		{
			wait_pause();
		}

		if ((state & (cpu_flag::dbg_global_pause + cpu_flag::exit)) == cpu_flag::dbg_global_pause)
		{
			// Wait 16ms during emulation pause. This reduces cpu load while still giving us the chance to render overlays.
			do_local_task(rsx::FIFO::state::paused);
			thread_ctrl::wait_on(state, old, 16000);
		}
		else
		{
			on_semaphore_acquire_wait();
			std::this_thread::yield();
		}
	}

	void thread::post_vblank_event(u64 post_event_time)
	{
		vblank_count++;

		if (isHLE)
		{
			if (auto ptr = vblank_handler)
			{
				intr_thread->cmd_list({{ppu_cmd::set_args, 1}, u64{1},
					{ppu_cmd::lle_call, ptr},
					{ppu_cmd::sleep, 0}});

				intr_thread->cmd_notify.store(1);
				intr_thread->cmd_notify.notify_one();
			}
		}
		else
		{
			sys_rsx_context_attribute(0x55555555, 0xFED, 1, get_guest_system_time(post_event_time), 0, 0);
		}
	}

	namespace nv4097
	{
		void set_render_mode(context* rsx, u32, u32 arg);
	}

	void thread::on_task()
	{
		g_tls_log_prefix = []
		{
			const auto rsx = get_current_renderer();
			return fmt::format("RSX [0x%07x]", rsx->ctrl ? +rsx->ctrl->get : 0);
		};

		if (!serialized)
			method_registers.init();

		rsx::overlays::reset_performance_overlay();
		rsx::overlays::reset_debug_overlay();

		if (!is_initialized)
		{
			g_fxo->get<rsx::dma_manager>().init();
			on_init_thread();

			if (in_begin_end)
			{
				// on_init_thread should have prepared the backend resources
				// Run draw call warmup again if the savestate happened mid-draw
				ensure(serialized);
				begin();
			}
		}

		is_initialized = true;
		is_initialized.notify_all();

		if (!zcull_ctrl)
		{
			// Backend did not provide an implementation, provide NULL object
			zcull_ctrl = std::make_unique<::rsx::reports::ZCULL_control>();
		}

		check_zcull_status(false);
		nv4097::set_render_mode(m_ctx, 0, method_registers.registers[NV4097_SET_RENDER_ENABLE]);

		performance_counters.state = FIFO::state::empty;

		const u64 event_flags = unsent_gcm_events.exchange(0);

		if (Emu.IsStarting())
		{
			Emu.CallFromMainThread([]
				{
					Emu.RunPPU();
				});
		}

		// Wait for startup (TODO)
		while (!rsx_thread_running || Emu.IsPausedOrReady())
		{
			// Execute backend-local tasks first
			do_local_task(performance_counters.state);

			// Update sub-units
			zcull_ctrl->update(this);

			if (is_stopped())
			{
				return;
			}

			thread_ctrl::wait_for(1000);
		}

		performance_counters.state = FIFO::state::running;

		fifo_ctrl = std::make_unique<::rsx::FIFO::FIFO_control>(this);
		fifo_ctrl->set_get(ctrl->get);

		last_guest_flip_timestamp = get_system_time() - 1000000;

		vblank_count = 0;

		if (restore_fifo_count)
		{
			fifo_ctrl->restore_state(restore_fifo_cmd, restore_fifo_count);
		}

		if (!send_event(0, event_flags, 0))
		{
			return;
		}

		g_fxo->get<vblank_thread>().set_thread(std::shared_ptr<named_thread<std::function<void()>>>(new named_thread<std::function<void()>>("VBlank Thread"sv, [this]() -> void
			{
#ifdef __linux__
				constexpr u32 host_min_quantum = 10;
#else
				constexpr u32 host_min_quantum = 500;
#endif
				u64 start_time = get_system_time();

				u64 vblank_rate = g_cfg.video.vblank_rate;
				u64 vblank_period = 1'000'000 + u64{g_cfg.video.vblank_ntsc.get()} * 1000;

				u64 local_vblank_count = 0;

				// TODO: exit condition
				while (!is_stopped() && !unsent_gcm_events && thread_ctrl::state() != thread_state::aborting)
				{
					// Get current time
					const u64 current = get_system_time();

					// Calculate the time at which we need to send a new VBLANK signal
					const u64 post_event_time = start_time + (local_vblank_count + 1) * vblank_period / vblank_rate;

					// Calculate time remaining to that time (0 if we passed it)
					const u64 wait_for = current >= post_event_time ? 0 : post_event_time - current;

#ifdef __linux__
					const u64 wait_sleep = wait_for;
#else
					// Substract host operating system min sleep quantom to get sleep time
					const u64 wait_sleep = wait_for - u64{wait_for >= host_min_quantum} * host_min_quantum;
#endif

					if (!wait_for)
					{
						{
							local_vblank_count++;

							if (local_vblank_count == vblank_rate)
							{
								// Advance start_time to the moment of the current VBLANK
							    // Which is the last VBLANK event in this period
							    // This is in order for multiplication by ratio above to use only small numbers
								start_time += vblank_period;
								local_vblank_count = 0;

								// We have a rare chance to update settings without losing precision whenever local_vblank_count is 0
								vblank_rate = g_cfg.video.vblank_rate;
								vblank_period = 1'000'000 + u64{g_cfg.video.vblank_ntsc.get()} * 1000;
							}

							post_vblank_event(post_event_time);
						}
					}
					else if (wait_sleep)
					{
						thread_ctrl::wait_for(wait_sleep);
					}
					else if (wait_for >= host_min_quantum / 3 * 2)
					{
						std::this_thread::yield();
					}

					if (Emu.IsPaused())
					{
						// Save the difference before pause
						start_time = get_system_time() - start_time;

						while (Emu.IsPaused() && !is_stopped())
						{
							thread_ctrl::wait_for(5'000);
						}

						// Restore difference
						start_time = get_system_time() - start_time;
					}
				}
			})));

		struct join_vblank
		{
			~join_vblank() noexcept
			{
				g_fxo->get<vblank_thread>() = thread_state::finished;
			}

		} join_vblank_obj{};

		// Raise priority above other threads
		thread_ctrl::scoped_priority high_prio(+1);

		if (g_cfg.core.thread_scheduler != thread_scheduler_mode::os)
		{
			thread_ctrl::set_thread_affinity_mask(thread_ctrl::get_affinity_mask(thread_class::rsx));
		}

		while (!test_stopped())
		{
			// Wait for external pause events
			if (external_interrupt_lock)
			{
				wait_pause();

				if (!rsx_thread_running)
				{
					return;
				}
			}

			// Note a possible rollback address
			if (sync_point_request && !in_begin_end)
			{
				restore_point = ctrl->get;
				saved_fifo_ret = fifo_ret_addr;
				sync_point_request.release(false);
			}

			// Update sub-units every 64 cycles. The local handler is invoked for other functions externally on-demand anyway.
			// This avoids expensive calls to check timestamps which involves reading some values from TLS storage on windows.
			// If something is going on in the backend that requires an update, set the interrupt bit explicitly.
			if ((m_cycles_counter++ & 63) == 0 || m_eng_interrupt_mask)
			{
				// Execute backend-local tasks first
				do_local_task(performance_counters.state);

				// Update other sub-units
				zcull_ctrl->update(this);

				if (m_host_dma_ctrl)
				{
					m_host_dma_ctrl->update();
				}
			}

			// Execute FIFO queue
			run_FIFO();
		}
	}

	void thread::on_exit()
	{
		if (zcull_ctrl)
		{
			zcull_ctrl->sync(this);
		}

		// Deregister violation handler
		g_access_violation_handler = nullptr;

		// Clear any pending flush requests to release threads
		std::this_thread::sleep_for(10ms);
		do_local_task(rsx::FIFO::state::lock_wait);

		g_fxo->get<rsx::dma_manager>().join();
		g_fxo->get<vblank_thread>() = thread_state::finished;
		state += cpu_flag::exit;
	}

	u64 thread::timestamp()
	{
		const u64 freq = sys_time_get_timebase_frequency();

		auto get_time_ns = [freq]()
		{
			const u64 t = get_timebased_time();
			return (t / freq * 1'000'000'000 + t % freq * 1'000'000'000 / freq);
		};

		const u64 t = get_time_ns();
		if (t != timestamp_ctrl)
		{
			timestamp_ctrl = t;
			timestamp_subvalue = 0;
			return t;
		}

		// Check if we passed the limit of what fixed increments is legal for
		// Wait for the next time value reported if we passed the limit
		if ((1'000'000'000 / freq) - timestamp_subvalue <= 2)
		{
			u64 now = get_time_ns();

			for (; t == now; now = get_time_ns())
			{
				utils::pause();
			}

			timestamp_ctrl = now;
			timestamp_subvalue = 0;
			return now;
		}

		timestamp_subvalue += 2;
		return t + timestamp_subvalue;
	}

	void thread::do_local_task(FIFO::state state)
	{
		m_eng_interrupt_mask.clear(rsx::backend_interrupt);

		if (async_flip_requested & flip_request::emu_requested)
		{
			// NOTE: This has to be executed immediately
			// Delaying this operation can cause desync due to the delay in firing the flip event
			handle_emu_flip(async_flip_buffer);
		}

		if (state != FIFO::state::lock_wait)
		{
			if (!in_begin_end && atomic_storage<u32>::load(m_invalidated_memory_range.end) != 0)
			{
				std::lock_guard lock(m_mtx_task);

				if (m_invalidated_memory_range.valid())
				{
					handle_invalidated_memory_range();
				}
			}

			if (m_eng_interrupt_mask & rsx::dma_control_interrupt && !is_stopped())
			{
				if (const u64 get_put = new_get_put.exchange(u64{umax});
					get_put != umax)
				{
					vm::_ref<atomic_be_t<u64>>(dma_address + OFFSET_OF(RsxDmaControl, put)).release(get_put);
					fifo_ctrl->set_get(static_cast<u32>(get_put));
					fifo_ctrl->abort();
					fifo_ret_addr = RSX_CALL_STACK_EMPTY;
					last_known_code_start = static_cast<u32>(get_put);
					sync_point_request.release(true);
				}

				m_eng_interrupt_mask.clear(rsx::dma_control_interrupt);
			}
		}

		if (m_eng_interrupt_mask & rsx::pipe_flush_interrupt)
		{
			sync();
		}

		if (is_stopped())
		{
			std::lock_guard lock(m_mtx_task);

			m_invalidated_memory_range = utils::address_range::start_end(0x2 << 28, constants::local_mem_base + local_mem_size - 1);
			handle_invalidated_memory_range();
		}
	}

	std::array<u32, 4> thread::get_color_surface_addresses() const
	{
		u32 offset_color[] =
			{
				rsx::method_registers.surface_offset(0),
				rsx::method_registers.surface_offset(1),
				rsx::method_registers.surface_offset(2),
				rsx::method_registers.surface_offset(3),
			};
		u32 context_dma_color[] =
			{
				rsx::method_registers.surface_dma(0),
				rsx::method_registers.surface_dma(1),
				rsx::method_registers.surface_dma(2),
				rsx::method_registers.surface_dma(3),
			};
		return {
			rsx::get_address(offset_color[0], context_dma_color[0]),
			rsx::get_address(offset_color[1], context_dma_color[1]),
			rsx::get_address(offset_color[2], context_dma_color[2]),
			rsx::get_address(offset_color[3], context_dma_color[3]),
		};
	}

	u32 thread::get_zeta_surface_address() const
	{
		u32 m_context_dma_z = rsx::method_registers.surface_z_dma();
		u32 offset_zeta = rsx::method_registers.surface_z_offset();
		return rsx::get_address(offset_zeta, m_context_dma_z);
	}

	void thread::get_framebuffer_layout(rsx::framebuffer_creation_context context, framebuffer_layout& layout)
	{
		layout = {};

		layout.ignore_change = true;
		layout.width = rsx::method_registers.surface_clip_width();
		layout.height = rsx::method_registers.surface_clip_height();

		m_graphics_state.clear(rsx::rtt_config_contested | rsx::rtt_config_valid);
		m_current_framebuffer_context = context;

		if (layout.width == 0 || layout.height == 0)
		{
			rsx_log.trace("Invalid framebuffer setup, w=%d, h=%d", layout.width, layout.height);
			return;
		}

		// const u16 clip_x = rsx::method_registers.surface_clip_origin_x();
		// const u16 clip_y = rsx::method_registers.surface_clip_origin_y();

		layout.color_addresses = get_color_surface_addresses();
		layout.zeta_address = get_zeta_surface_address();
		layout.zeta_pitch = rsx::method_registers.surface_z_pitch();
		layout.color_pitch =
			{
				rsx::method_registers.surface_pitch(0),
				rsx::method_registers.surface_pitch(1),
				rsx::method_registers.surface_pitch(2),
				rsx::method_registers.surface_pitch(3),
			};

		layout.color_format = rsx::method_registers.surface_color();
		layout.depth_format = rsx::method_registers.surface_depth_fmt();
		layout.target = rsx::method_registers.surface_color_target();

		const auto mrt_buffers = rsx::utility::get_rtt_indexes(layout.target);
		const auto aa_mode = rsx::method_registers.surface_antialias();
		const u32 aa_factor_u = (aa_mode == rsx::surface_antialiasing::center_1_sample) ? 1 : 2;
		const u32 aa_factor_v = (aa_mode == rsx::surface_antialiasing::center_1_sample || aa_mode == rsx::surface_antialiasing::diagonal_centered_2_samples) ? 1 : 2;
		const u8 sample_count = get_format_sample_count(aa_mode);

		const auto depth_texel_size = get_format_block_size_in_bytes(layout.depth_format) * aa_factor_u;
		const auto color_texel_size = get_format_block_size_in_bytes(layout.color_format) * aa_factor_u;
		const bool stencil_test_enabled = is_depth_stencil_format(layout.depth_format) && rsx::method_registers.stencil_test_enabled();
		const bool depth_test_enabled = rsx::method_registers.depth_test_enabled();

		// Check write masks
		layout.zeta_write_enabled = (depth_test_enabled && rsx::method_registers.depth_write_enabled());
		if (!layout.zeta_write_enabled && stencil_test_enabled)
		{
			// Check if stencil data is modified
			auto mask = rsx::method_registers.stencil_mask();
			bool active_write_op = (rsx::method_registers.stencil_op_zpass() != rsx::stencil_op::keep ||
									rsx::method_registers.stencil_op_fail() != rsx::stencil_op::keep ||
									rsx::method_registers.stencil_op_zfail() != rsx::stencil_op::keep);

			if ((!mask || !active_write_op) && rsx::method_registers.two_sided_stencil_test_enabled())
			{
				mask |= rsx::method_registers.back_stencil_mask();
				active_write_op |= (rsx::method_registers.back_stencil_op_zpass() != rsx::stencil_op::keep ||
									rsx::method_registers.back_stencil_op_fail() != rsx::stencil_op::keep ||
									rsx::method_registers.back_stencil_op_zfail() != rsx::stencil_op::keep);
			}

			layout.zeta_write_enabled = (mask && active_write_op);
		}

		// NOTE: surface_target_a is index 1 but is not MRT since only one surface is active
		bool color_write_enabled = false;
		for (uint i = 0; i < mrt_buffers.size(); ++i)
		{
			if (rsx::method_registers.color_write_enabled(i))
			{
				const auto real_index = mrt_buffers[i];
				layout.color_write_enabled[real_index] = true;
				color_write_enabled = true;
			}
		}

		bool depth_buffer_unused = false, color_buffer_unused = false;

		switch (context)
		{
		case rsx::framebuffer_creation_context::context_clear_all:
			break;
		case rsx::framebuffer_creation_context::context_clear_depth:
			color_buffer_unused = true;
			break;
		case rsx::framebuffer_creation_context::context_clear_color:
			depth_buffer_unused = true;
			break;
		case rsx::framebuffer_creation_context::context_draw:
			// NOTE: As with all other hw, depth/stencil writes involve the corresponding depth/stencil test, i.e No test = No write
			// NOTE: Depth test is not really using the memory if its set to always or never
			// TODO: Perform similar checks for stencil test
			if (!stencil_test_enabled)
			{
				if (!depth_test_enabled)
				{
					depth_buffer_unused = true;
				}
				else if (!rsx::method_registers.depth_write_enabled())
				{
					// Depth test is enabled but depth write is disabled
					switch (rsx::method_registers.depth_func())
					{
					default:
						break;
					case rsx::comparison_function::never:
					case rsx::comparison_function::always:
						// No access to depth buffer memory
						depth_buffer_unused = true;
						break;
					}
				}

				if (depth_buffer_unused) [[unlikely]]
				{
					// Check if depth bounds is active. Depth bounds test does NOT need depth test to be enabled to access the Z buffer
					// Bind Z buffer in read mode for bounds check in this case
					if (rsx::method_registers.depth_bounds_test_enabled() &&
						(rsx::method_registers.depth_bounds_min() > 0.f || rsx::method_registers.depth_bounds_max() < 1.f))
					{
						depth_buffer_unused = false;
					}
				}
			}

			color_buffer_unused = !color_write_enabled || layout.target == rsx::surface_target::none;
			if (color_buffer_unused || depth_buffer_unused)
			{
				m_graphics_state.set(rsx::rtt_config_contested);
			}
			break;
		default:
			fmt::throw_exception("Unknown framebuffer context 0x%x", static_cast<u32>(context));
		}

		// Swizzled render does tight packing of bytes
		bool packed_render = false;
		u32 minimum_color_pitch = 64u;
		u32 minimum_zeta_pitch = 64u;

		switch (layout.raster_type = rsx::method_registers.surface_type())
		{
		default:
			rsx_log.error("Unknown raster mode 0x%x", static_cast<u32>(layout.raster_type));
			[[fallthrough]];
		case rsx::surface_raster_type::linear:
			break;
		case rsx::surface_raster_type::swizzle:
			packed_render = true;
			break;
		}

		if (!packed_render)
		{
			// Well, this is a write operation either way (clearing or drawing)
			// We can deduce a minimum pitch for which this operation is guaranteed to require by checking for the lesser of scissor or clip
			const u32 write_limit_x = std::min<u32>(layout.width, rsx::method_registers.scissor_origin_x() + rsx::method_registers.scissor_width());

			minimum_color_pitch = color_texel_size * write_limit_x;
			minimum_zeta_pitch = depth_texel_size * write_limit_x;

			// Check for size fit and attempt to correct incorrect inputs.
			// BLUS30072 is misconfigured here and renders fine on PS3. The width fails to account for AA being active in that engine.
			u16 corrected_width = umax;
			std::vector<u32*> pitch_fixups;

			if (!depth_buffer_unused)
			{
				if (layout.zeta_pitch < minimum_zeta_pitch)
				{
					// Observed in CoD3 where the depth buffer is clearly misconfigured.
					if (layout.zeta_pitch > 64)
					{
						corrected_width = layout.zeta_pitch / depth_texel_size;
						layout.zeta_pitch = depth_texel_size;
						pitch_fixups.push_back(&layout.zeta_pitch);
					}
					else
					{
						rsx_log.warning("Misconfigured surface could not fit a depth buffer. Dropping.");
						layout.zeta_address = 0;
					}
				}
				else if (layout.width * depth_texel_size > layout.zeta_pitch)
				{
					// This is ok, misconfigured raster dimensions, but we're only writing the pitch as determined by the scissor
					corrected_width = layout.zeta_pitch / depth_texel_size;
				}
			}

			if (!color_buffer_unused)
			{
				for (const auto& index : rsx::utility::get_rtt_indexes(layout.target))
				{
					if (layout.color_pitch[index] < minimum_color_pitch)
					{
						if (layout.color_pitch[index] > 64)
						{
							corrected_width = std::min<u16>(corrected_width, layout.color_pitch[index] / color_texel_size);
							layout.color_pitch[index] = color_texel_size;
							pitch_fixups.push_back(&layout.color_pitch[index]);
						}
						else
						{
							rsx_log.warning("Misconfigured surface could not fit color buffer %d. Dropping.", index);
							layout.color_addresses[index] = 0;
						}

						continue;
					}

					if (layout.width * color_texel_size > layout.color_pitch[index])
					{
						// This is ok, misconfigured raster dimensions, but we're only writing the pitch as determined by the scissor
						corrected_width = std::min<u16>(corrected_width, layout.color_pitch[index] / color_texel_size);
					}
				}
			}

			if (corrected_width != umax)
			{
				layout.width = corrected_width;

				for (auto& value : pitch_fixups)
				{
					*value = *value * layout.width;
				}
			}
		}

		if (depth_buffer_unused)
		{
			layout.zeta_address = 0;
		}
		else if (packed_render)
		{
			layout.actual_zeta_pitch = (layout.width * depth_texel_size);
		}
		else
		{
			layout.actual_zeta_pitch = layout.zeta_pitch;
		}

		for (const auto& index : rsx::utility::get_rtt_indexes(layout.target))
		{
			if (color_buffer_unused)
			{
				layout.color_addresses[index] = 0;
				continue;
			}

			if (layout.color_pitch[index] < minimum_color_pitch)
			{
				// Unlike the depth buffer, when given a color target we know it is intended to be rendered to
				rsx_log.warning("Framebuffer setup error: Color target failed pitch check, Pitch=[%d, %d, %d, %d] + %d, target=%d, context=%d",
					layout.color_pitch[0], layout.color_pitch[1], layout.color_pitch[2], layout.color_pitch[3],
					layout.zeta_pitch, static_cast<u32>(layout.target), static_cast<u32>(context));

				// Some games (COD4) are buggy and set incorrect width + AA + pitch combo. Force fit in such scenarios.
				if (layout.color_pitch[index] > 64)
				{
					layout.width = layout.color_pitch[index] / color_texel_size;
				}
				else
				{
					layout.color_addresses[index] = 0;
					continue;
				}
			}

			if (layout.color_addresses[index] == layout.zeta_address)
			{
				rsx_log.warning("Framebuffer at 0x%X has aliasing color/depth targets, color_index=%d, zeta_pitch = %d, color_pitch=%d, context=%d",
					layout.zeta_address, index, layout.zeta_pitch, layout.color_pitch[index], static_cast<u32>(context));

				m_graphics_state.set(rsx::rtt_config_contested);

				// TODO: Research clearing both depth AND color
				// TODO: If context is creation_draw, deal with possibility of a lost buffer clear
				if (depth_test_enabled || stencil_test_enabled || (!layout.color_write_enabled[index] && layout.zeta_write_enabled))
				{
					// Use address for depth data
					layout.color_addresses[index] = 0;
					continue;
				}
				else
				{
					// Use address for color data
					layout.zeta_address = 0;
				}
			}

			ensure(layout.color_addresses[index]);

			const auto packed_pitch = (layout.width * color_texel_size);
			if (packed_render)
			{
				layout.actual_color_pitch[index] = packed_pitch;
			}
			else
			{
				layout.actual_color_pitch[index] = layout.color_pitch[index];
			}

			m_graphics_state.set(rsx::rtt_config_valid);
		}

		if (!m_graphics_state.test(rsx::rtt_config_valid) && !layout.zeta_address)
		{
			rsx_log.warning("Framebuffer setup failed. Draw calls may have been lost");
			return;
		}

		// At least one attachment exists
		m_graphics_state.set(rsx::rtt_config_valid);

		// Window (raster) offsets
		const auto window_offset_x = rsx::method_registers.window_offset_x();
		const auto window_offset_y = rsx::method_registers.window_offset_y();
		const auto window_clip_width = rsx::method_registers.window_clip_horizontal();
		const auto window_clip_height = rsx::method_registers.window_clip_vertical();

		if (window_offset_x || window_offset_y)
		{
			// Window offset is what affects the raster position!
			// Tested with Turbo: Super stunt squad that only changes the window offset to declare new framebuffers
			// Sampling behavior clearly indicates the addresses are expected to have changed
			if (auto clip_type = rsx::method_registers.window_clip_type())
				rsx_log.error("Unknown window clip type 0x%X", clip_type);

			for (const auto& index : rsx::utility::get_rtt_indexes(layout.target))
			{
				if (layout.color_addresses[index])
				{
					const u32 window_offset_bytes = (layout.actual_color_pitch[index] * window_offset_y) + (color_texel_size * window_offset_x);
					layout.color_addresses[index] += window_offset_bytes;
				}
			}

			if (layout.zeta_address)
			{
				layout.zeta_address += (layout.actual_zeta_pitch * window_offset_y) + (depth_texel_size * window_offset_x);
			}
		}

		if ((window_clip_width && window_clip_width < layout.width) ||
			(window_clip_height && window_clip_height < layout.height))
		{
			rsx_log.error("Unexpected window clip dimensions: window_clip=%dx%d, surface_clip=%dx%d",
				window_clip_width, window_clip_height, layout.width, layout.height);
		}

		layout.aa_mode = aa_mode;
		layout.aa_factors[0] = aa_factor_u;
		layout.aa_factors[1] = aa_factor_v;

		// Log this to frame stats
		if (layout.target != rsx::surface_target::none)
		{
			m_frame_stats.framebuffer_stats.add(layout.width, layout.height, aa_mode);
		}

		// Check if anything has changed
		bool really_changed = false;

		for (u8 i = 0; i < rsx::limits::color_buffers_count; ++i)
		{
			if (m_surface_info[i].address != layout.color_addresses[i])
			{
				really_changed = true;
				break;
			}

			if (layout.color_addresses[i])
			{
				if (m_surface_info[i].width != layout.width ||
					m_surface_info[i].height != layout.height ||
					m_surface_info[i].color_format != layout.color_format ||
					m_surface_info[i].samples != sample_count)
				{
					really_changed = true;
					break;
				}
			}
		}

		if (!really_changed)
		{
			if (layout.zeta_address == m_depth_surface_info.address &&
				layout.depth_format == m_depth_surface_info.depth_format &&
				sample_count == m_depth_surface_info.samples)
			{
				// Same target is reused
				return;
			}
		}

		layout.ignore_change = false;
	}

	void thread::on_framebuffer_options_changed(u32 opt)
	{
		if (m_graphics_state & rsx::rtt_config_dirty)
		{
			// Nothing to do
			return;
		}

		auto evaluate_depth_buffer_state = [&]()
		{
			m_framebuffer_layout.zeta_write_enabled =
				(rsx::method_registers.depth_test_enabled() && rsx::method_registers.depth_write_enabled());
		};

		auto evaluate_stencil_buffer_state = [&]()
		{
			if (!m_framebuffer_layout.zeta_write_enabled &&
				rsx::method_registers.stencil_test_enabled() &&
				is_depth_stencil_format(m_framebuffer_layout.depth_format))
			{
				// Check if stencil data is modified
				auto mask = rsx::method_registers.stencil_mask();
				bool active_write_op = (rsx::method_registers.stencil_op_zpass() != rsx::stencil_op::keep ||
										rsx::method_registers.stencil_op_fail() != rsx::stencil_op::keep ||
										rsx::method_registers.stencil_op_zfail() != rsx::stencil_op::keep);

				if ((!mask || !active_write_op) && rsx::method_registers.two_sided_stencil_test_enabled())
				{
					mask |= rsx::method_registers.back_stencil_mask();
					active_write_op |= (rsx::method_registers.back_stencil_op_zpass() != rsx::stencil_op::keep ||
										rsx::method_registers.back_stencil_op_fail() != rsx::stencil_op::keep ||
										rsx::method_registers.back_stencil_op_zfail() != rsx::stencil_op::keep);
				}

				m_framebuffer_layout.zeta_write_enabled = (mask && active_write_op);
			}
		};

		auto evaluate_color_buffer_state = [&]() -> bool
		{
			const auto mrt_buffers = rsx::utility::get_rtt_indexes(m_framebuffer_layout.target);
			bool any_found = false;

			for (uint i = 0; i < mrt_buffers.size(); ++i)
			{
				if (m_ctx->register_state->color_write_enabled(i))
				{
					const auto real_index = mrt_buffers[i];
					m_framebuffer_layout.color_write_enabled[real_index] = true;
					any_found = true;
				}
			}

			if (::size32(mrt_buffers) != current_fragment_program.mrt_buffers_count &&
				!m_graphics_state.test(rsx::pipeline_state::fragment_program_dirty) &&
				!is_current_program_interpreted())
			{
				// Notify that we should recompile the FS
				m_graphics_state |= rsx::pipeline_state::fragment_program_state_dirty;
			}

			return any_found;
		};

		auto evaluate_depth_buffer_contested = [&]()
		{
			if (m_framebuffer_layout.zeta_address) [[likely]]
			{
				// Nothing to do, depth buffer already exists
				return false;
			}

			// Check if depth read/write is enabled
			if (m_framebuffer_layout.zeta_write_enabled ||
				rsx::method_registers.depth_test_enabled())
			{
				return true;
			}

			// Check if stencil read is enabled
			if (is_depth_stencil_format(m_framebuffer_layout.depth_format) &&
				rsx::method_registers.stencil_test_enabled())
			{
				return true;
			}

			return false;
		};

		switch (opt)
		{
		case NV4097_SET_DEPTH_TEST_ENABLE:
		case NV4097_SET_DEPTH_MASK:
		case NV4097_SET_DEPTH_FUNC:
		{
			evaluate_depth_buffer_state();

			if (m_graphics_state.test(rsx::rtt_config_contested) && evaluate_depth_buffer_contested())
			{
				m_graphics_state.set(rsx::rtt_config_dirty);
			}
			break;
		}
		case NV4097_SET_TWO_SIDED_STENCIL_TEST_ENABLE:
		case NV4097_SET_STENCIL_TEST_ENABLE:
		case NV4097_SET_STENCIL_MASK:
		case NV4097_SET_STENCIL_OP_ZPASS:
		case NV4097_SET_STENCIL_OP_FAIL:
		case NV4097_SET_STENCIL_OP_ZFAIL:
		case NV4097_SET_BACK_STENCIL_MASK:
		case NV4097_SET_BACK_STENCIL_OP_ZPASS:
		case NV4097_SET_BACK_STENCIL_OP_FAIL:
		case NV4097_SET_BACK_STENCIL_OP_ZFAIL:
		{
			// Stencil takes a back seat to depth buffer stuff
			evaluate_depth_buffer_state();

			if (!m_framebuffer_layout.zeta_write_enabled)
			{
				evaluate_stencil_buffer_state();
			}

			if (m_graphics_state.test(rsx::rtt_config_contested) && evaluate_depth_buffer_contested())
			{
				m_graphics_state.set(rsx::rtt_config_dirty);
			}
			break;
		}
		case NV4097_SET_COLOR_MASK:
		case NV4097_SET_COLOR_MASK_MRT:
		{
			if (!m_graphics_state.test(rsx::rtt_config_contested)) [[likely]]
			{
				// Update write masks and continue
				evaluate_color_buffer_state();
			}
			else
			{
				bool old_state = false;
				for (const auto& enabled : m_framebuffer_layout.color_write_enabled)
				{
					if (old_state = enabled; old_state)
						break;
				}

				const auto new_state = evaluate_color_buffer_state();
				if (!old_state && new_state)
				{
					// Color buffers now in use
					m_graphics_state.set(rsx::rtt_config_dirty);
				}
			}
			break;
		}
		default:
			rsx_log.fatal("Unhandled framebuffer option changed 0x%x", opt);
		}
	}

	bool thread::get_scissor(areau& region, bool clip_viewport)
	{
		if (!m_graphics_state.test(rsx::pipeline_state::scissor_config_state_dirty))
		{
			if (clip_viewport == m_graphics_state.test(rsx::pipeline_state::scissor_setup_clipped))
			{
				// Nothing to do
				return false;
			}
		}

		m_graphics_state.clear(rsx::pipeline_state::scissor_config_state_dirty | rsx::pipeline_state::scissor_setup_clipped);

		u16 x1, x2, y1, y2;

		u16 scissor_x = rsx::method_registers.scissor_origin_x();
		u16 scissor_w = rsx::method_registers.scissor_width();
		u16 scissor_y = rsx::method_registers.scissor_origin_y();
		u16 scissor_h = rsx::method_registers.scissor_height();

		if (clip_viewport)
		{
			u16 raster_x = rsx::method_registers.viewport_origin_x();
			u16 raster_w = rsx::method_registers.viewport_width();
			u16 raster_y = rsx::method_registers.viewport_origin_y();
			u16 raster_h = rsx::method_registers.viewport_height();

			// Get the minimum area between these two
			x1 = std::max(scissor_x, raster_x);
			y1 = std::max(scissor_y, raster_y);
			x2 = std::min(scissor_x + scissor_w, raster_x + raster_w);
			y2 = std::min(scissor_y + scissor_h, raster_y + raster_h);

			m_graphics_state |= rsx::pipeline_state::scissor_setup_clipped;
		}
		else
		{
			x1 = scissor_x;
			x2 = scissor_x + scissor_w;
			y1 = scissor_y;
			y2 = scissor_y + scissor_h;
		}

		if (x2 <= x1 ||
			y2 <= y1 ||
			x1 >= rsx::method_registers.window_clip_horizontal() ||
			y1 >= rsx::method_registers.window_clip_vertical())
		{
			m_graphics_state |= rsx::pipeline_state::scissor_setup_invalid;
			m_graphics_state.clear(rsx::rtt_config_valid);
			return false;
		}

		if (m_graphics_state & rsx::pipeline_state::scissor_setup_invalid)
		{
			m_graphics_state.clear(rsx::pipeline_state::scissor_setup_invalid);
			m_graphics_state.set(rsx::rtt_config_valid);
		}

		std::tie(region.x1, region.y1) = rsx::apply_resolution_scale<false>(x1, y1, m_framebuffer_layout.width, m_framebuffer_layout.height);
		std::tie(region.x2, region.y2) = rsx::apply_resolution_scale<true>(x2, y2, m_framebuffer_layout.width, m_framebuffer_layout.height);

		return true;
	}

	void thread::prefetch_fragment_program()
	{
		if (!m_graphics_state.test(rsx::pipeline_state::fragment_program_ucode_dirty))
		{
			return;
		}

		m_graphics_state.clear(rsx::pipeline_state::fragment_program_ucode_dirty);

		// Request for update of fragment constants if the program block is invalidated
		m_graphics_state |= rsx::pipeline_state::fragment_constants_dirty;

		const auto [program_offset, program_location] = method_registers.shader_program_address();
		const auto prev_textures_reference_mask = current_fp_metadata.referenced_textures_mask;

		auto data_ptr = vm::base(rsx::get_address(program_offset, program_location));
		current_fp_metadata = program_hash_util::fragment_program_utils::analyse_fragment_program(data_ptr);

		current_fragment_program.data = (static_cast<u8*>(data_ptr) + current_fp_metadata.program_start_offset);
		current_fragment_program.offset = program_offset + current_fp_metadata.program_start_offset;
		current_fragment_program.ucode_length = current_fp_metadata.program_ucode_length;
		current_fragment_program.total_length = current_fp_metadata.program_ucode_length + current_fp_metadata.program_start_offset;
		current_fragment_program.texture_state.import(current_fp_texture_state, current_fp_metadata.referenced_textures_mask);
		current_fragment_program.valid = true;

		if (!m_graphics_state.test(rsx::pipeline_state::fragment_program_state_dirty))
		{
			// Verify current texture state is valid
			for (u32 textures_ref = current_fp_metadata.referenced_textures_mask, i = 0; textures_ref; textures_ref >>= 1, ++i)
			{
				if (!(textures_ref & 1))
					continue;

				if (m_textures_dirty[i])
				{
					m_graphics_state |= rsx::pipeline_state::fragment_program_state_dirty;
					break;
				}
			}
		}

		if (!m_graphics_state.test(rsx::pipeline_state::fragment_program_state_dirty) &&
			(prev_textures_reference_mask != current_fp_metadata.referenced_textures_mask))
		{
			// If different textures are used, upload their coefficients.
			// The texture parameters transfer routine is optimized and only writes data for textures consumed by the ucode.
			m_graphics_state |= rsx::pipeline_state::fragment_texture_state_dirty;
		}
	}

	void thread::prefetch_vertex_program()
	{
		if (!m_graphics_state.test(rsx::pipeline_state::vertex_program_ucode_dirty))
		{
			return;
		}

		m_graphics_state.clear(rsx::pipeline_state::vertex_program_ucode_dirty);

		// Reload transform constants unconditionally for now
		m_graphics_state |= rsx::pipeline_state::transform_constants_dirty;

		const u32 transform_program_start = rsx::method_registers.transform_program_start();
		current_vertex_program.data.reserve(512 * 4);
		current_vertex_program.jump_table.clear();

		current_vp_metadata = program_hash_util::vertex_program_utils::analyse_vertex_program(
			method_registers.transform_program.data(), // Input raw block
			transform_program_start,                   // Address of entry point
			current_vertex_program                     // [out] Program object
		);

		current_vertex_program.texture_state.import(current_vp_texture_state, current_vp_metadata.referenced_textures_mask);

		if (!m_graphics_state.test(rsx::pipeline_state::vertex_program_state_dirty))
		{
			// Verify current texture state is valid
			for (u32 textures_ref = current_vp_metadata.referenced_textures_mask, i = 0; textures_ref; textures_ref >>= 1, ++i)
			{
				if (!(textures_ref & 1))
					continue;

				if (m_vertex_textures_dirty[i])
				{
					m_graphics_state |= rsx::pipeline_state::vertex_program_state_dirty;
					break;
				}
			}
		}
	}

	void thread::analyse_current_rsx_pipeline()
	{
		m_program_cache_hint.invalidate(m_graphics_state.load());

		prefetch_vertex_program();
		prefetch_fragment_program();
	}

	void thread::get_current_vertex_program(const std::array<std::unique_ptr<rsx::sampled_image_descriptor_base>, rsx::limits::vertex_textures_count>& sampler_descriptors)
	{
		if (m_graphics_state.test(rsx::pipeline_state::xform_instancing_state_dirty))
		{
			current_vertex_program.ctrl = 0;
			if (rsx::method_registers.current_draw_clause.is_trivial_instanced_draw)
			{
				current_vertex_program.ctrl |= RSX_SHADER_CONTROL_INSTANCED_CONSTANTS;
			}

			m_graphics_state.clear(rsx::pipeline_state::xform_instancing_state_dirty);

			// Emit invalidate here in case ucode is actually clean
			m_program_cache_hint.invalidate_vertex_program(current_vertex_program);
		}

		if (!m_graphics_state.test(rsx::pipeline_state::vertex_program_dirty))
		{
			return;
		}

		ensure(!m_graphics_state.test(rsx::pipeline_state::vertex_program_ucode_dirty));
		current_vertex_program.output_mask = rsx::method_registers.vertex_attrib_output_mask();

		for (u32 textures_ref = current_vp_metadata.referenced_textures_mask, i = 0; textures_ref; textures_ref >>= 1, ++i)
		{
			if (!(textures_ref & 1))
				continue;

			const auto& tex = rsx::method_registers.vertex_textures[i];
			if (tex.enabled() && (current_vp_metadata.referenced_textures_mask & (1 << i)))
			{
				current_vp_texture_state.clear(i);
				current_vp_texture_state.set_dimension(sampler_descriptors[i]->image_type, i);

				if (backend_config.supports_hw_msaa &&
					sampler_descriptors[i]->samples > 1)
				{
					current_vp_texture_state.multisampled_textures |= (1 << i);
				}
			}
		}

		current_vertex_program.texture_state.import(current_vp_texture_state, current_vp_metadata.referenced_textures_mask);

		m_program_cache_hint.invalidate_vertex_program(current_vertex_program);
	}

	void thread::get_current_fragment_program(const std::array<std::unique_ptr<rsx::sampled_image_descriptor_base>, rsx::limits::fragment_textures_count>& sampler_descriptors)
	{
		if (!m_graphics_state.test(rsx::pipeline_state::fragment_program_dirty))
		{
			return;
		}

		ensure(!m_graphics_state.test(rsx::pipeline_state::fragment_program_ucode_dirty));

		m_graphics_state.clear(rsx::pipeline_state::fragment_program_dirty);

		current_fragment_program.ctrl = m_ctx->register_state->shader_control() & (CELL_GCM_SHADER_CONTROL_32_BITS_EXPORTS | CELL_GCM_SHADER_CONTROL_DEPTH_EXPORT);
		current_fragment_program.texcoord_control_mask = m_ctx->register_state->texcoord_control_mask();
		current_fragment_program.two_sided_lighting = m_ctx->register_state->two_side_light_en();
		current_fragment_program.mrt_buffers_count = rsx::utility::get_mrt_buffers_count(m_ctx->register_state->surface_color_target());

		if (method_registers.current_draw_clause.classify_mode() == primitive_class::polygon)
		{
			if (!backend_config.supports_normalized_barycentrics)
			{
				current_fragment_program.ctrl |= RSX_SHADER_CONTROL_ATTRIBUTE_INTERPOLATION;
			}
		}
		else if (method_registers.point_sprite_enabled() &&
				 method_registers.current_draw_clause.primitive == primitive_type::points)
		{
			// Set high word of the control mask to store point sprite control
			current_fragment_program.texcoord_control_mask |= u32(method_registers.point_sprite_control_mask()) << 16;
		}

		for (u32 textures_ref = current_fp_metadata.referenced_textures_mask, i = 0; textures_ref; textures_ref >>= 1, ++i)
		{
			if (!(textures_ref & 1))
				continue;

			auto& tex = rsx::method_registers.fragment_textures[i];
			current_fp_texture_state.clear(i);

			if (tex.enabled() && sampler_descriptors[i]->format_class != RSX_FORMAT_CLASS_UNDEFINED)
			{
				std::memcpy(current_fragment_program.texture_params[i].scale, sampler_descriptors[i]->texcoord_xform.scale, 6 * sizeof(f32));
				current_fragment_program.texture_params[i].remap = tex.remap();

				m_graphics_state |= rsx::pipeline_state::fragment_texture_state_dirty;

				u32 texture_control = 0;
				current_fp_texture_state.set_dimension(sampler_descriptors[i]->image_type, i);

				if (sampler_descriptors[i]->texcoord_xform.clamp)
				{
					std::memcpy(current_fragment_program.texture_params[i].clamp_min, sampler_descriptors[i]->texcoord_xform.clamp_min, 4 * sizeof(f32));
					texture_control |= (1 << rsx::texture_control_bits::CLAMP_TEXCOORDS_BIT);
				}

				if (tex.alpha_kill_enabled())
				{
					// alphakill can be ignored unless a valid comparison function is set
					texture_control |= (1 << texture_control_bits::ALPHAKILL);
				}

				// const u32 texaddr = rsx::get_address(tex.offset(), tex.location());
				const u32 raw_format = tex.format();
				const u32 format = raw_format & ~(CELL_GCM_TEXTURE_LN | CELL_GCM_TEXTURE_UN);

				if (raw_format & CELL_GCM_TEXTURE_UN)
				{
					if (tex.min_filter() == rsx::texture_minify_filter::nearest ||
						tex.mag_filter() == rsx::texture_magnify_filter::nearest)
					{
						// Subpixel offset so that (X + bias) * scale will round correctly.
						// This is done to work around fdiv precision issues in some GPUs (NVIDIA)
						// We apply the simplification where (x + bias) * z = xz + zbias here.
						constexpr auto subpixel_bias = 0.01f;
						current_fragment_program.texture_params[i].bias[0] += (subpixel_bias * current_fragment_program.texture_params[i].scale[0]);
						current_fragment_program.texture_params[i].bias[1] += (subpixel_bias * current_fragment_program.texture_params[i].scale[1]);
						current_fragment_program.texture_params[i].bias[2] += (subpixel_bias * current_fragment_program.texture_params[i].scale[2]);
					}
				}

				if (backend_config.supports_hw_msaa && sampler_descriptors[i]->samples > 1)
				{
					current_fp_texture_state.multisampled_textures |= (1 << i);
					texture_control |= (static_cast<u32>(tex.zfunc()) << texture_control_bits::DEPTH_COMPARE_OP);
					texture_control |= (static_cast<u32>(tex.mag_filter() != rsx::texture_magnify_filter::nearest) << texture_control_bits::FILTERED_MAG);
					texture_control |= (static_cast<u32>(tex.min_filter() != rsx::texture_minify_filter::nearest) << texture_control_bits::FILTERED_MIN);
					texture_control |= (((tex.format() & CELL_GCM_TEXTURE_UN) >> 6) << texture_control_bits::UNNORMALIZED_COORDS);

					if (rsx::is_texcoord_wrapping_mode(tex.wrap_s()))
					{
						texture_control |= (1 << texture_control_bits::WRAP_S);
					}

					if (rsx::is_texcoord_wrapping_mode(tex.wrap_t()))
					{
						texture_control |= (1 << texture_control_bits::WRAP_T);
					}

					if (rsx::is_texcoord_wrapping_mode(tex.wrap_r()))
					{
						texture_control |= (1 << texture_control_bits::WRAP_R);
					}
				}

				if (sampler_descriptors[i]->format_class != RSX_FORMAT_CLASS_COLOR)
				{
					switch (sampler_descriptors[i]->format_class)
					{
					case RSX_FORMAT_CLASS_DEPTH16_FLOAT:
					case RSX_FORMAT_CLASS_DEPTH24_FLOAT_X8_PACK32:
						texture_control |= (1 << texture_control_bits::DEPTH_FLOAT);
						break;
					default:
						break;
					}

					switch (format)
					{
					case CELL_GCM_TEXTURE_A8R8G8B8:
					case CELL_GCM_TEXTURE_D8R8G8B8:
					{
						// Emulate bitcast in shader
						current_fp_texture_state.redirected_textures |= (1 << i);
						const auto float_en = (sampler_descriptors[i]->format_class == RSX_FORMAT_CLASS_DEPTH24_FLOAT_X8_PACK32) ? 1 : 0;
						texture_control |= (float_en << texture_control_bits::DEPTH_FLOAT);
						break;
					}
					case CELL_GCM_TEXTURE_X16:
					{
						// A simple way to quickly read DEPTH16 data without shadow comparison
						break;
					}
					case CELL_GCM_TEXTURE_DEPTH16:
					case CELL_GCM_TEXTURE_DEPTH24_D8:
					case CELL_GCM_TEXTURE_DEPTH16_FLOAT:
					case CELL_GCM_TEXTURE_DEPTH24_D8_FLOAT:
					{
						// Natively supported Z formats with shadow comparison feature
						const auto compare_mode = tex.zfunc();
						if (!tex.alpha_kill_enabled() &&
							compare_mode < rsx::comparison_function::always &&
							compare_mode > rsx::comparison_function::never)
						{
							current_fp_texture_state.shadow_textures |= (1 << i);
						}
						break;
					}
					default:
						rsx_log.error("Depth texture bound to pipeline with unexpected format 0x%X", format);
					}
				}
				else if (!backend_config.supports_hw_renormalization /* &&
				    tex.min_filter() == rsx::texture_minify_filter::nearest &&
				    tex.mag_filter() == rsx::texture_magnify_filter::nearest*/
				)
				{
					// FIXME: This check should only apply to point-sampled textures. However, it severely regresses some games (id tech 5).
					// This is because even when filtering is active, the error from the PS3 texture expansion still applies.
					// A proper fix is to expand these formats into BGRA8 when high texture precision is required. That requires different GUI settings and inflation shaders, so it will be handled separately.

					switch (format)
					{
					case CELL_GCM_TEXTURE_A1R5G5B5:
					case CELL_GCM_TEXTURE_A4R4G4B4:
					case CELL_GCM_TEXTURE_D1R5G5B5:
					case CELL_GCM_TEXTURE_R5G5B5A1:
					case CELL_GCM_TEXTURE_R5G6B5:
					case CELL_GCM_TEXTURE_R6G5B5:
						texture_control |= (1 << texture_control_bits::RENORMALIZE);
						break;
					default:
						break;
					}
				}

				if (rsx::is_int8_remapped_format(format))
				{
					// Special operations applied to 8-bit formats such as gamma correction and sign conversion
					// NOTE: The unsigned_remap=bias flag being set flags the texture as being compressed normal (2n-1 / BX2) (UE3)
					// NOTE: The ARGB8_signed flag means to reinterpret the raw bytes as signed. This is different than unsigned_remap=bias which does range decompression.
					// This is a separate method of setting the format to signed mode without doing so per-channel
					// Precedence = SNORM > GAMMA > UNSIGNED_REMAP (See Resistance 3 for GAMMA/BX2 relationship, UE3 for BX2 effect)

					const u32 argb8_signed = tex.argb_signed();                                                                                         // _SNROM
					const u32 gamma = tex.gamma() & ~argb8_signed;                                                                                      // _SRGB
					const u32 unsigned_remap = (tex.unsigned_remap() == CELL_GCM_TEXTURE_UNSIGNED_REMAP_NORMAL) ? 0u : (~(gamma | argb8_signed) & 0xF); // _BX2
					u32 argb8_convert = gamma;

					// The options are mutually exclusive
					ensure((argb8_signed & gamma) == 0);
					ensure((argb8_signed & unsigned_remap) == 0);
					ensure((gamma & unsigned_remap) == 0);

					// Helper function to apply a per-channel mask based on an input mask
					const auto apply_sign_convert_mask = [&](u32 mask, u32 bit_offset)
					{
						// TODO: Use actual remap mask to account for 0 and 1 overrides in default mapping
						// TODO: Replace this clusterfuck of texture control with matrix transformation
						const auto remap_ctrl = (tex.remap() >> 8) & 0xAA;
						if (remap_ctrl == 0xAA)
						{
							argb8_convert |= (mask & 0xFu) << bit_offset;
							return;
						}

						if ((remap_ctrl & 0x03) == 0x02)
							argb8_convert |= (mask & 0x1u) << bit_offset;
						if ((remap_ctrl & 0x0C) == 0x08)
							argb8_convert |= (mask & 0x2u) << bit_offset;
						if ((remap_ctrl & 0x30) == 0x20)
							argb8_convert |= (mask & 0x4u) << bit_offset;
						if ((remap_ctrl & 0xC0) == 0x80)
							argb8_convert |= (mask & 0x8u) << bit_offset;
					};

					if (argb8_signed)
					{
						// Apply integer sign extension from uint8 to sint8 and renormalize
						apply_sign_convert_mask(argb8_signed, texture_control_bits::SEXT_OFFSET);
					}

					if (unsigned_remap)
					{
						// Apply sign expansion, compressed normal-map style (2n - 1)
						apply_sign_convert_mask(unsigned_remap, texture_control_bits::EXPAND_OFFSET);
					}

					texture_control |= argb8_convert;
				}

				current_fragment_program.texture_params[i].control = texture_control;
			}
		}

		// Update texture configuration
		current_fragment_program.texture_state.import(current_fp_texture_state, current_fp_metadata.referenced_textures_mask);

		// Sanity checks
		if (current_fragment_program.ctrl & CELL_GCM_SHADER_CONTROL_DEPTH_EXPORT)
		{
			// Check that the depth stage is not disabled
			if (!rsx::method_registers.depth_test_enabled())
			{
				rsx_log.trace("FS exports depth component but depth test is disabled (INVALID_OPERATION)");
			}
		}

		m_program_cache_hint.invalidate_fragment_program(current_fragment_program);
	}

	bool thread::invalidate_fragment_program(u32 dst_dma, u32 dst_offset, u32 size)
	{
		if (!current_fragment_program.total_length)
		{
			// No shader loaded
			return false;
		}

		const auto [shader_offset, shader_dma] = rsx::method_registers.shader_program_address();
		if ((dst_dma & CELL_GCM_LOCATION_MAIN) != shader_dma)
		{
			// Shader not loaded in XDR memory
			return false;
		}

		const auto current_fragment_shader_range = address_range::start_length(shader_offset, current_fragment_program.total_length);
		if (!current_fragment_shader_range.overlaps(address_range::start_length(dst_offset, size)))
		{
			// No range overlap
			return false;
		}

		// Data overlaps. Force ucode reload.
		m_graphics_state |= rsx::pipeline_state::fragment_program_ucode_dirty;
		return true;
	}

	void thread::reset()
	{
		rsx::method_registers.reset();
		check_zcull_status(false);
		nv4097::set_render_mode(m_ctx, 0, method_registers.registers[NV4097_SET_RENDER_ENABLE]);
		m_graphics_state |= pipeline_state::all_dirty;
	}

	void thread::init(u32 ctrlAddress)
	{
		dma_address = ctrlAddress;
		ctrl = vm::_ptr<RsxDmaControl>(ctrlAddress);
		flip_status = CELL_GCM_DISPLAY_FLIP_STATUS_DONE;
		fifo_ret_addr = RSX_CALL_STACK_EMPTY;

		vm::write32(device_addr + 0x30, 1);
		std::memset(display_buffers, 0, sizeof(display_buffers));

		rsx_thread_running = true;
	}

	std::pair<u32, u32> thread::calculate_memory_requirements(const vertex_input_layout& layout, u32 first_vertex, u32 vertex_count)
	{
		u32 persistent_memory_size = 0;
		u32 volatile_memory_size = 0;

		volatile_memory_size += ::size32(layout.referenced_registers) * 16u;

		if (rsx::method_registers.current_draw_clause.command == rsx::draw_command::inlined_array)
		{
			for (const auto& block : layout.interleaved_blocks)
			{
				volatile_memory_size += block->attribute_stride * vertex_count;
			}
		}
		else
		{
			// NOTE: Immediate commands can be index array only or both index array and vertex data
			// Check both - but only check volatile blocks if immediate_draw flag is set
			if (rsx::method_registers.current_draw_clause.is_immediate_draw)
			{
				for (const auto& info : layout.volatile_blocks)
				{
					volatile_memory_size += info.second;
				}
			}

			persistent_memory_size = layout.calculate_interleaved_memory_requirements(first_vertex, vertex_count);
		}

		return std::make_pair(persistent_memory_size, volatile_memory_size);
	}

	void thread::flip(const display_flip_info_t& info)
	{
		m_eng_interrupt_mask.clear(rsx::display_interrupt);

		if (async_flip_requested & flip_request::any)
		{
			// Deferred flip
			if (info.emu_flip)
			{
				async_flip_requested.clear(flip_request::emu_requested);
			}
			else
			{
				async_flip_requested.clear(flip_request::native_ui);
			}
		}

		if (info.emu_flip)
		{
			performance_counters.sampled_frames++;

			if (m_pause_after_x_flips && m_pause_after_x_flips-- == 1)
			{
				Emu.Pause();
			}
		}

		last_host_flip_timestamp = get_system_time();
	}

	void thread::check_zcull_status(bool framebuffer_swap)
	{
		const bool zcull_rendering_enabled = !!method_registers.registers[NV4097_SET_ZCULL_EN];
		const bool zcull_stats_enabled = !!method_registers.registers[NV4097_SET_ZCULL_STATS_ENABLE];
		const bool zcull_pixel_cnt_enabled = !!method_registers.registers[NV4097_SET_ZPASS_PIXEL_COUNT_ENABLE];

		if (framebuffer_swap)
		{
			zcull_surface_active = false;
			const u32 zeta_address = m_depth_surface_info.address;

			if (zeta_address)
			{
				// Find zeta address in bound zculls
				for (const auto& zcull : zculls)
				{
					if (zcull.bound &&
						rsx::to_surface_depth_format(zcull.zFormat) == m_depth_surface_info.depth_format &&
						rsx::to_surface_antialiasing(zcull.aaFormat) == rsx::method_registers.surface_antialias())
					{
						const u32 rsx_address = rsx::get_address(zcull.offset, CELL_GCM_LOCATION_LOCAL);
						if (rsx_address == zeta_address)
						{
							zcull_surface_active = true;
							break;
						}
					}
				}
			}
		}

		zcull_ctrl->set_enabled(this, zcull_rendering_enabled);
		zcull_ctrl->set_status(this, zcull_surface_active, zcull_pixel_cnt_enabled, zcull_stats_enabled);
	}

	void thread::clear_zcull_stats(u32 type)
	{
		zcull_ctrl->clear(this, type);
	}

	void thread::get_zcull_stats(u32 type, vm::addr_t sink)
	{
		u32 value = 0;
		if (!g_cfg.video.disable_zcull_queries)
		{
			switch (type)
			{
			case CELL_GCM_ZPASS_PIXEL_CNT:
			case CELL_GCM_ZCULL_STATS:
			case CELL_GCM_ZCULL_STATS1:
			case CELL_GCM_ZCULL_STATS2:
			case CELL_GCM_ZCULL_STATS3:
			{
				zcull_ctrl->read_report(this, sink, type);
				return;
			}
			default:
				rsx_log.error("Unknown zcull stat type %d", type);
				break;
			}
		}

		rsx::reservation_lock<true> lock(sink, 16);
		vm::_ref<atomic_t<CellGcmReportData>>(sink).store({timestamp(), value, 0});
	}

	u32 thread::copy_zcull_stats(u32 memory_range_start, u32 memory_range, u32 destination)
	{
		return zcull_ctrl->copy_reports_to(memory_range_start, memory_range, destination);
	}

	void thread::enable_conditional_rendering(vm::addr_t ref)
	{
		cond_render_ctrl.enable_conditional_render(this, ref);

		auto result = zcull_ctrl->find_query(ref, true);
		if (result.found)
		{
			if (!result.queries.empty())
			{
				cond_render_ctrl.set_eval_sources(result.queries);
				sync_hint(FIFO::interrupt_hint::conditional_render_eval, {.query = cond_render_ctrl.eval_sources.front(), .address = ref});
			}
			else
			{
				bool failed = (result.raw_zpass_result == 0);
				cond_render_ctrl.set_eval_result(this, failed);
			}
		}
		else
		{
			cond_render_ctrl.eval_result(this);
		}
	}

	void thread::disable_conditional_rendering()
	{
		cond_render_ctrl.disable_conditional_render(this);
	}

	void thread::begin_conditional_rendering(const std::vector<reports::occlusion_query_info*>& /*sources*/)
	{
		cond_render_ctrl.hw_cond_active = true;
		cond_render_ctrl.eval_sources.clear();
	}

	void thread::end_conditional_rendering()
	{
		cond_render_ctrl.hw_cond_active = false;
	}

	void thread::sync()
	{
		m_eng_interrupt_mask.clear(rsx::pipe_flush_interrupt);

		mm_flush();

		if (zcull_ctrl->has_pending())
		{
			zcull_ctrl->sync(this);
		}

		// Fragment constants may have been updated
		m_graphics_state |= rsx::pipeline_state::fragment_constants_dirty;

		// DMA sync; if you need this, don't use MTRSX
		// g_fxo->get<rsx::dma_manager>().sync();

		// TODO: On sync every sub-unit should finish any pending tasks
		// Might cause zcull lockup due to zombie 'unclaimed reports' which are not forcefully removed currently
		// ensure(async_tasks_pending.load() == 0);
	}

	void thread::sync_hint(FIFO::interrupt_hint /*hint*/, rsx::reports::sync_hint_payload_t payload)
	{
		zcull_ctrl->on_sync_hint(payload);
	}

	bool thread::is_fifo_idle() const
	{
		return ctrl == nullptr || ctrl->get == (ctrl->put & ~3);
	}

	void thread::flush_fifo()
	{
		// Make sure GET value is exposed before sync points
		fifo_ctrl->sync_get();
		fifo_ctrl->invalidate_cache();
	}

	std::pair<u32, u32> thread::try_get_pc_of_x_cmds_backwards(s32 count, u32 get) const
	{
		if (!ctrl || state & cpu_flag::exit)
		{
			return {0, umax};
		}

		if (!count)
		{
			return {0, get};
		}

		u32 true_get = ctrl->get;
		u32 start = last_known_code_start;

		RSXDisAsm disasm(cpu_disasm_mode::survey_cmd_size, vm::g_sudo_addr, 0, this);

		std::vector<u32> pcs_of_valid_cmds;

		if (get > start)
		{
			pcs_of_valid_cmds.reserve(std::min<u32>((get - start) / 16, 0x4000)); // Rough estimation of final array size
		}

		auto probe_code_region = [&](u32 probe_start) -> std::pair<u32, u32>
		{
			if (probe_start > get)
			{
				return {0, get};
			}

			pcs_of_valid_cmds.clear();
			pcs_of_valid_cmds.push_back(probe_start);

			usz index_of_get = umax;
			usz until = umax;

			while (pcs_of_valid_cmds.size() < until)
			{
				if (u32 advance = disasm.disasm(pcs_of_valid_cmds.back()))
				{
					pcs_of_valid_cmds.push_back(utils::add_saturate<u32>(pcs_of_valid_cmds.back(), advance));
				}
				else
				{
					break;
				}

				if (index_of_get == umax && pcs_of_valid_cmds.back() >= get)
				{
					index_of_get = pcs_of_valid_cmds.size() - 1;
					until = index_of_get + 1;

					if (count < 0 && pcs_of_valid_cmds.back() == get)
					{
						until -= count;
					}
				}
			}

			if (index_of_get == umax || pcs_of_valid_cmds[index_of_get] != get)
			{
				return {0, get};
			}

			if (count < 0)
			{
				const u32 found_cmds_count = static_cast<u32>(std::min<s64>(-count, pcs_of_valid_cmds.size() - 1LL - index_of_get));

				return {found_cmds_count, pcs_of_valid_cmds[index_of_get + found_cmds_count]};
			}

			const u32 found_cmds_count = std::min<u32>(count, ::size32(pcs_of_valid_cmds) - 1);

			return {found_cmds_count, *(pcs_of_valid_cmds.end() - 1 - found_cmds_count)};
		};

		auto pair = probe_code_region(start);

		if (!pair.first)
		{
			pair = probe_code_region(true_get);
		}

		return pair;
	}

	void thread::recover_fifo(std::source_location src_loc)
	{
		bool kill_itself = g_cfg.core.rsx_fifo_accuracy == rsx_fifo_mode::as_ps3;

		const u64 current_time = get_system_time();

		if (recovered_fifo_cmds_history.size() == 20u)
		{
			const auto cmd_info = recovered_fifo_cmds_history.front();

			// Check timestamp of last tracked cmd
			// Shorten the range of forbidden difference if driver wake-up delay is used
			if (current_time - cmd_info.timestamp < 2'000'000u - std::min<u32>(g_cfg.video.driver_wakeup_delay * 700, 1'400'000))
			{
				// Probably hopeless
				kill_itself = true;
			}

			// Erase the last command from history, keep the size of the queue the same
			recovered_fifo_cmds_history.pop();
		}

		if (kill_itself)
		{
			fmt::throw_exception("Dead FIFO commands queue state has been detected!"
								 "\nTry increasing \"Driver Wake-Up Delay\" setting or setting \"RSX FIFO Accuracy\" to \"%s\", both in Advanced settings. Called from %s",
				std::min<rsx_fifo_mode>(rsx_fifo_mode{static_cast<u32>(g_cfg.core.rsx_fifo_accuracy.get()) + 1}, rsx_fifo_mode::atomic_ordered), src_loc);
		}

		// Error. Should reset the queue
		fifo_ctrl->set_get(restore_point);
		fifo_ret_addr = saved_fifo_ret;
		std::this_thread::sleep_for(2ms);
		fifo_ctrl->abort();

		if (std::exchange(in_begin_end, false) && !rsx::method_registers.current_draw_clause.empty())
		{
			execute_nop_draw();
			rsx::thread::end();
		}

		recovered_fifo_cmds_history.push({fifo_ctrl->last_cmd(), current_time});
	}

	std::string thread::dump_misc() const
	{
		std::string ret = cpu_thread::dump_misc();

		const auto flags = +state;

		if (is_paused(flags) && flags & cpu_flag::wait)
		{
			fmt::append(ret, "\nFragment Program Hash: %X.fp", current_fragment_program.get_data() ? program_hash_util::fragment_program_utils::get_fragment_program_ucode_hash(current_fragment_program) : 0);
			fmt::append(ret, "\nVertex Program Hash: %X.vp", current_vertex_program.data.empty() ? 0 : program_hash_util::vertex_program_utils::get_vertex_program_ucode_hash(current_vertex_program));
		}
		else
		{
			fmt::append(ret, "\n");
		}

		return ret;
	}

	std::vector<std::pair<u32, u32>> thread::dump_callstack_list() const
	{
		std::vector<std::pair<u32, u32>> result;

		if (u32 addr = fifo_ret_addr; addr != RSX_CALL_STACK_EMPTY)
		{
			result.emplace_back(addr, 0);
		}

		return result;
	}

	void thread::fifo_wake_delay(u64 div)
	{
		// TODO: Nanoseconds accuracy
		u64 remaining = g_cfg.video.driver_wakeup_delay;

		if (!remaining)
		{
			return;
		}

		// Some cases do not need full delay
		remaining = utils::aligned_div(remaining, div);
		const u64 until = get_system_time() + remaining;

		while (true)
		{
#ifdef __linux__
			// NOTE: Assumption that timer initialization has succeeded
			constexpr u64 host_min_quantum = 10;
#else
			// Host scheduler quantum for windows (worst case)
			// NOTE: On ps3 this function has very high accuracy
			constexpr u64 host_min_quantum = 500;
#endif
			if (remaining >= host_min_quantum)
			{
#ifdef __linux__
				thread_ctrl::wait_for(remaining, false);
#else
				// Wait on multiple of min quantum for large durations to avoid overloading low thread cpus
				thread_ctrl::wait_for(remaining - (remaining % host_min_quantum), false);
#endif
			}
			// TODO: Determine best value for yield delay
			else if (remaining >= host_min_quantum / 2)
			{
				std::this_thread::yield();
			}
			else
			{
				busy_wait(100);
			}

			const u64 current = get_system_time();

			if (current >= until)
			{
				break;
			}

			remaining = until - current;
		}
	}

	u32 thread::get_fifo_cmd() const
	{
		// Last fifo cmd for logging and utility
		return fifo_ctrl->last_cmd();
	}

	void invalid_method(context*, u32, u32);

	void thread::dump_regs(std::string& result, std::any& /*custom_data*/) const
	{
		if (ctrl)
		{
			fmt::append(result, "FIFO: GET=0x%07x, PUT=0x%07x, REF=0x%08x\n", +ctrl->get, +ctrl->put, +ctrl->ref);
		}

		for (u32 i = 0; i < 1 << 14; i++)
		{
			if (rsx::methods[i] == &invalid_method)
			{
				continue;
			}

			switch (i)
			{
			case NV4097_NO_OPERATION:
			case NV4097_INVALIDATE_L2:
			case NV4097_INVALIDATE_VERTEX_FILE:
			case NV4097_INVALIDATE_VERTEX_CACHE_FILE:
			case NV4097_INVALIDATE_ZCULL:
			case NV4097_WAIT_FOR_IDLE:
			case NV4097_PM_TRIGGER:
			case NV4097_ZCULL_SYNC:
				continue;

			case NV308A_COLOR:
			{
				i = NV3089_SET_OBJECT;
				continue;
			}
			default:
			{
				break;
			}
			}

			fmt::append(result, "[%04x] ", i);
			ensure(rsx::get_pretty_printing_function(i))(result, i, method_registers.registers[i]);
			result += '\n';
		}
	}

	flags32_t thread::read_barrier(u32 memory_address, u32 memory_range, bool unconditional)
	{
		flags32_t zcull_flags = (unconditional) ? reports::sync_none : reports::sync_defer_copy;
		return zcull_ctrl->read_barrier(this, memory_address, memory_range, zcull_flags);
	}

	void thread::notify_zcull_info_changed()
	{
		check_zcull_status(false);
	}

	void thread::on_notify_memory_mapped(u32 address, u32 size)
	{
		// In the case where an unmap is followed shortly after by a remap of the same address space
		// we must block until RSX has invalidated the memory
		// or lock m_mtx_task and do it ourselves

		if (!rsx_thread_running)
			return;

		reader_lock lock(m_mtx_task);

		const auto map_range = address_range::start_length(address, size);

		if (!m_invalidated_memory_range.valid())
			return;

		if (m_invalidated_memory_range.overlaps(map_range))
		{
			lock.upgrade();
			handle_invalidated_memory_range();
		}
	}

	void thread::on_notify_pre_memory_unmapped(u32 address, u32 size, std::vector<std::pair<u64, u64>>& event_data)
	{
		// Always flush MM if memory mapping is going to change.
		rsx::mm_flush();

		if (rsx_thread_running && address < rsx::constants::local_mem_base)
		{
			// Each bit represents io entry to be unmapped
			u64 unmap_status[512 / 64]{};

			for (u32 ea = address >> 20, end = ea + (size >> 20); ea < end; ea++)
			{
				const u32 io = utils::rol32(iomap_table.io[ea], 32 - 20);

				if (io + 1)
				{
					unmap_status[io / 64] |= 1ull << (io & 63);
					iomap_table.io[ea].release(-1);
					iomap_table.ea[io].release(-1);
				}
			}

			auto& cfg = g_fxo->get<gcm_config>();

			std::unique_lock<shared_mutex> hle_lock;

			for (u32 i = 0; i < std::size(unmap_status); i++)
			{
				// TODO: Check order when sending multiple events
				if (u64 to_unmap = unmap_status[i])
				{
					if (isHLE)
					{
						if (!hle_lock)
						{
							hle_lock = std::unique_lock{cfg.gcmio_mutex};
						}

						int bit = 0;

						while (to_unmap)
						{
							bit = (std::countr_zero<u64>(utils::rol64(to_unmap, 0 - bit)) + bit);
							to_unmap &= ~(1ull << bit);

							constexpr u16 null_entry = 0xFFFF;
							const u32 ea = std::exchange(cfg.offsetTable.eaAddress[(i * 64 + bit)], null_entry);

							if (ea < (rsx::constants::local_mem_base >> 20))
							{
								cfg.offsetTable.eaAddress[ea] = null_entry;
							}
						}

						continue;
					}

					// Each 64 entries are grouped by a bit
					const u64 io_event = SYS_RSX_EVENT_UNMAPPED_BASE << i;
					event_data.emplace_back(io_event, to_unmap);
				}
			}

			if (hle_lock)
			{
				hle_lock.unlock();
			}

			// Pause RSX thread momentarily to handle unmapping
			eng_lock elock(this);

			// Queue up memory invalidation
			std::lock_guard lock(m_mtx_task);
			const bool existing_range_valid = m_invalidated_memory_range.valid();
			const auto unmap_range = address_range::start_length(address, size);

			if (existing_range_valid && m_invalidated_memory_range.touches(unmap_range))
			{
				// Merge range-to-invalidate in case of consecutive unmaps
				m_invalidated_memory_range.set_min_max(unmap_range);
			}
			else
			{
				if (existing_range_valid)
				{
					// We can only delay consecutive unmaps.
					// Otherwise, to avoid VirtualProtect failures, we need to do the invalidation here
					handle_invalidated_memory_range();
				}

				m_invalidated_memory_range = unmap_range;
			}

			m_eng_interrupt_mask |= rsx::memory_config_interrupt;
		}
	}

	void thread::on_notify_post_memory_unmapped(u64 event_data1, u64 event_data2)
	{
		if (!isHLE)
		{
			send_event(0, event_data1, event_data2);
		}
	}

	// NOTE: m_mtx_task lock must be acquired before calling this method
	void thread::handle_invalidated_memory_range()
	{
		AUDIT(!m_mtx_task.is_free());
		m_eng_interrupt_mask.clear(rsx::memory_config_interrupt);

		if (!m_invalidated_memory_range.valid())
		{
			return;
		}

		if (is_stopped())
		{
			// We only need to commit host-resident memory to the guest in case of savestates or captures.
			on_invalidate_memory_range(m_invalidated_memory_range, rsx::invalidation_cause::read);
		}

		// Host sync
		rsx::mm_flush();

		on_invalidate_memory_range(m_invalidated_memory_range, rsx::invalidation_cause::unmap);
		m_invalidated_memory_range.invalidate();
	}

	void thread::renderctl(u32 request_code, void* /*args*/)
	{
		switch (request_code)
		{
		case rsx::mm_backend_ctrl::cmd_mm_flush:
			rsx::mm_flush();
			break;
		default:
			fmt::throw_exception("Unknown backend request: 0x%x", request_code);
		}
	}

	// Pause/cont wrappers for FIFO ctrl. Never call this from rsx thread itself!
	void thread::pause()
	{
		external_interrupt_lock++;

		while (!external_interrupt_ack && !is_stopped())
		{
			utils::pause();
		}
	}

	void thread::unpause()
	{
		// TODO: Clean this shit up
		external_interrupt_lock--;
	}

	void thread::wait_pause()
	{
		do
		{
			if (g_cfg.video.multithreaded_rsx)
			{
				g_fxo->get<rsx::dma_manager>().sync();
			}

			external_interrupt_ack.store(true);

			while (external_interrupt_lock && (cpu_flag::ret - state))
			{
				// TODO: Investigate non busy-spinning method
				utils::pause();
			}

			external_interrupt_ack.store(false);
		} while (external_interrupt_lock && (cpu_flag::ret - state));
	}

	u32 thread::get_load()
	{
		// Average load over around 30 frames
		if (!performance_counters.last_update_timestamp || performance_counters.sampled_frames > 30)
		{
			const auto timestamp = get_system_time();
			const auto idle = performance_counters.idle_time.load();
			const auto elapsed = timestamp - performance_counters.last_update_timestamp;

			if (elapsed > idle)
				performance_counters.approximate_load = static_cast<u32>((elapsed - idle) * 100 / elapsed);
			else
				performance_counters.approximate_load = 0u;

			performance_counters.idle_time = 0;
			performance_counters.sampled_frames = 0;
			performance_counters.last_update_timestamp = timestamp;
		}

		return performance_counters.approximate_load;
	}

	void thread::on_frame_end(u32 buffer, bool forced)
	{
		bool pause_emulator = false;

		// MM sync. This is a pre-emptive operation, so we can use a deferred request.
		rsx::mm_flush_lazy();

		// Marks the end of a frame scope GPU-side
		if (g_user_asked_for_frame_capture.exchange(false) && !capture_current_frame)
		{
			capture_current_frame = true;
			frame_debug.reset();
			frame_capture.reset();

			// random number just to jumpstart the size
			frame_capture.replay_commands.reserve(8000);

			// capture first tile state with nop cmd
			rsx::frame_capture_data::replay_command replay_cmd;
			replay_cmd.rsx_command = std::make_pair(NV4097_NO_OPERATION, 0);
			frame_capture.replay_commands.push_back(replay_cmd);
			capture::capture_display_tile_state(this, frame_capture.replay_commands.back());
		}
		else if (capture_current_frame)
		{
			capture_current_frame = false;

			std::string file_path = fs::get_config_dir() + "captures/" + Emu.GetTitleID() + "_" + date_time::current_time_narrow() + "_capture.rrc.gz";

			fs::pending_file temp(file_path);

			utils::serial save_manager;

			if (temp.file)
			{
				save_manager.m_file_handler = make_compressed_serialization_file_handler(temp.file);
				save_manager(frame_capture);

				save_manager.m_file_handler->finalize(save_manager);

				if (temp.commit(false))
				{
					rsx_log.success("Capture successful: %s", file_path);
					frame_capture.reset();
					pause_emulator = true;
				}
				else
				{
					rsx_log.error("Capture failed: %s (%s)", file_path, fs::g_tls_error);
				}
			}
			else
			{
				rsx_log.fatal("Capture failed: %s (%s)", file_path, fs::g_tls_error);
			}
		}

		if (zcull_ctrl->has_pending())
		{
			// NOTE: This is a workaround for buggy games.
			// Some applications leave the zpass/stats gathering active but don't use the information.
			// This can lead to the zcull unit using up all the memory queueing up operations that never get consumed.
			// Seen in Diablo III and Yakuza 5
			zcull_ctrl->clear(this, CELL_GCM_ZPASS_PIXEL_CNT | CELL_GCM_ZCULL_STATS);
		}

		// Save current state
		m_queued_flip.stats = m_frame_stats;
		m_queued_flip.push(buffer);
		m_queued_flip.skip_frame = skip_current_frame;

		if (!forced) [[likely]]
		{
			if (!g_cfg.video.disable_FIFO_reordering)
			{
				// Try to enable FIFO optimizations
				// Only rarely useful for some games like RE4
				m_flattener.evaluate_performance(m_frame_stats.draw_calls);
			}

			if (g_cfg.video.frame_skip_enabled)
			{
				m_skip_frame_ctr++;

				if (m_skip_frame_ctr >= g_cfg.video.consecutive_frames_to_draw)
					m_skip_frame_ctr = -g_cfg.video.consecutive_frames_to_skip;

				skip_current_frame = (m_skip_frame_ctr < 0);
			}
		}
		else
		{
			if (!g_cfg.video.disable_FIFO_reordering)
			{
				// Flattener is unusable due to forced random flips
				m_flattener.force_disable();
			}

			if (g_cfg.video.frame_skip_enabled)
			{
				rsx_log.error("Frame skip is not compatible with this application");
			}
		}

		if (pause_emulator)
		{
			Emu.Pause();
			thread_ctrl::wait_for(30'000);
		}

		// Reset current stats
		m_frame_stats = {};
		m_profiler.enabled = !!g_cfg.video.debug_overlay;
	}

	f64 thread::get_cached_display_refresh_rate()
	{
		constexpr u64 uses_per_query = 512;

		f64 result = m_cached_display_rate;
		u64 count = m_display_rate_fetch_count++;

		while (true)
		{
			if (count % 512 == 0)
			{
				result = get_display_refresh_rate();
				m_cached_display_rate.store(result);
				m_display_rate_fetch_count += uses_per_query; // Notify users of the new value
				break;
			}

			const u64 new_count = m_display_rate_fetch_count;
			const f64 new_cached = m_cached_display_rate;

			if (result == new_cached && count / uses_per_query == new_count / uses_per_query)
			{
				break;
			}

			// An update might have gone through
			count = new_count;
			result = new_cached;
		}

		return result;
	}

	bool thread::request_emu_flip(u32 buffer)
	{
		if (is_current_thread()) // requested through command buffer
		{
			// NOTE: The flip will clear any queued flip requests
			handle_emu_flip(buffer);
		}
		else // requested 'manually' through ppu syscall
		{
			if (async_flip_requested & flip_request::emu_requested)
			{
				// ignore multiple requests until previous happens
				return true;
			}

			async_flip_buffer = buffer;
			async_flip_requested |= flip_request::emu_requested;

			m_eng_interrupt_mask |= rsx::display_interrupt;

			if (state & cpu_flag::exit)
			{
				// Resubmit possibly-ignored flip on savestate load
				return false;
			}
		}

		return true;
	}

	void thread::handle_emu_flip(u32 buffer)
	{
		if (m_queued_flip.in_progress)
		{
			// Rescursion not allowed!
			return;
		}

		if (!m_queued_flip.pop(buffer))
		{
			// Frame was not queued before flipping
			on_frame_end(buffer, true);
			ensure(m_queued_flip.pop(buffer));
		}

		double limit = 0.;
		const auto frame_limit = g_disable_frame_limit ? frame_limit_type::none : g_cfg.video.frame_limit;

		switch (frame_limit)
		{
		case frame_limit_type::none: limit = g_cfg.core.max_cpu_preempt_count_per_frame ? static_cast<double>(g_cfg.video.vblank_rate) : 0.; break;
		case frame_limit_type::_30: limit = 30.; break;
		case frame_limit_type::_50: limit = 50.; break;
		case frame_limit_type::_60: limit = 60.; break;
		case frame_limit_type::_120: limit = 120.; break;
		case frame_limit_type::display_rate: limit = get_cached_display_refresh_rate(); break;
		case frame_limit_type::_auto: limit = static_cast<double>(g_cfg.video.vblank_rate); break;
		case frame_limit_type::_ps3: limit = 0.; break;
		case frame_limit_type::infinite: limit = 0.; break;
		default:
			break;
		}

		if (double limit2 = g_cfg.video.second_frame_limit; limit2 >= 0.1 && (limit2 < limit || !limit))
		{
			// Apply a second limit
			limit = limit2;
		}

		if (limit)
		{
			const u64 needed_us = static_cast<u64>(1000000 / limit);
			const u64 time = std::max<u64>(get_system_time(), target_rsx_flip_time > needed_us ? target_rsx_flip_time - needed_us : 0);

			if (int_flip_index)
			{
				if (target_rsx_flip_time > time + 1000)
				{
					const auto delay_us = target_rsx_flip_time - time;
					lv2_obj::wait_timeout(delay_us, nullptr, false);
					performance_counters.idle_time += delay_us;
				}
			}

			target_rsx_flip_time = std::max(time, target_rsx_flip_time) + needed_us;
			flip_notification_count = 1;
		}
		else if (frame_limit == frame_limit_type::_ps3)
		{
			bool exit = false;

			if (vblank_at_flip == umax)
			{
				vblank_at_flip = +vblank_count;
				flip_notification_count = 1;
				exit = true;
			}

			if (requested_vsync && (exit || vblank_at_flip == vblank_count))
			{
				// Not yet signaled, handle it later
				async_flip_requested |= flip_request::emu_requested;
				async_flip_buffer = buffer;
				return;
			}

			vblank_at_flip = umax;
		}
		else
		{
			flip_notification_count = 1;
		}

		int_flip_index += flip_notification_count;

		current_display_buffer = buffer;
		m_queued_flip.emu_flip = true;
		m_queued_flip.in_progress = true;
		m_queued_flip.skip_frame |= g_cfg.video.disable_video_output && !g_cfg.video.perf_overlay.perf_overlay_enabled;

		flip(m_queued_flip);

		last_guest_flip_timestamp = get_system_time() - 1000000;
		flip_status = CELL_GCM_DISPLAY_FLIP_STATUS_DONE;
		m_queued_flip.in_progress = false;

		while (flip_notification_count--)
		{
			if (!isHLE)
			{
				sys_rsx_context_attribute(0x55555555, 0xFEC, buffer, 0, 0, 0);

				if (unsent_gcm_events)
				{
					// TODO: A proper fix
					return;
				}

				continue;
			}

			if (auto ptr = flip_handler)
			{
				intr_thread->cmd_list({{ppu_cmd::set_args, 1}, u64{1},
					{ppu_cmd::lle_call, ptr},
					{ppu_cmd::sleep, 0}});

				intr_thread->cmd_notify.store(1);
				intr_thread->cmd_notify.notify_one();
			}
		}
	}

	void thread::evaluate_cpu_usage_reduction_limits()
	{
		const u64 max_preempt_count = g_cfg.core.max_cpu_preempt_count_per_frame;

		if (!max_preempt_count)
		{
			frame_times.clear();
			lv2_obj::set_yield_frequency(0, 0);
			return;
		}

		const u64 current_time = get_system_time();
		const u64 current_tsc = utils::get_tsc();
		u64 preempt_count = 0;

		if (frame_times.size() >= 60)
		{
			u64 diffs = 0;

			for (usz i = 1; i < frame_times.size(); i++)
			{
				const u64 cur_diff = frame_times[i].timestamp - frame_times[i - 1].timestamp;
				diffs += cur_diff;
			}

			const usz avg_frame_time = diffs / 59;

			u32 lowered_delay = 0;
			u32 raised_delay = 0;
			bool can_reevaluate = true;
			u64 prev_preempt_count = umax;

			for (usz i = frame_times.size() - 30; i < frame_times.size(); i++)
			{
				if (prev_preempt_count == umax)
				{
					prev_preempt_count = frame_times[i].preempt_count;
					continue;
				}

				if (prev_preempt_count != frame_times[i].preempt_count)
				{
					if (prev_preempt_count > frame_times[i].preempt_count)
					{
						lowered_delay++;
					}
					else if (prev_preempt_count < frame_times[i].preempt_count)
					{
						raised_delay++;
					}

					if (i > frame_times.size() - 30)
					{
						// Slow preemption count increase
						can_reevaluate = false;
					}
				}

				prev_preempt_count = frame_times[i].preempt_count;
			}

			preempt_count = std::min<u64>(frame_times.back().preempt_count, max_preempt_count);

			u32 fails = 0;
			u32 hard_fails = 0;
			bool is_last_frame_a_fail = false;

			auto abs_dst = [](u64 a, u64 b)
			{
				return a >= b ? a - b : b - a;
			};

			for (u32 i = 1; i <= frame_times.size(); i++)
			{
				const u64 cur_diff = (i == frame_times.size() ? current_time : frame_times[i].timestamp) - frame_times[i - 1].timestamp;

				if (const u64 diff_of_diff = abs_dst(cur_diff, avg_frame_time);
					diff_of_diff >= avg_frame_time / 7)
				{
					if (diff_of_diff >= avg_frame_time / 3)
					{
						raised_delay++;
						hard_fails++;

						if (i == frame_times.size())
						{
							is_last_frame_a_fail = true;
						}
					}

					if (fails != umax)
					{
						fails++;
					}
				}
			}

			bool hard_measures_taken = false;
			const usz fps_10 = 10'000'000 / avg_frame_time;

			auto lower_preemption_count = [&]()
			{
				if (preempt_count >= 10)
				{
					preempt_count -= 10;
				}
				else
				{
					preempt_count = 0;
				}

				if ((hard_fails > 2 || fails > 20) && is_last_frame_a_fail)
				{
					hard_measures_taken = preempt_count > 1;
					preempt_count = preempt_count * 7 / 8;
					prevent_preempt_increase_tickets = 10;
				}
				else
				{
					prevent_preempt_increase_tickets = std::max<u32>(7, prevent_preempt_increase_tickets);
				}
			};

			const u64 vblank_rate_10 = g_cfg.video.vblank_rate * 10;

			if (can_reevaluate)
			{
				const bool is_avg_fps_ok = (abs_dst(fps_10, 300) < 3 || abs_dst(fps_10, 600) < 4 || abs_dst(fps_10, vblank_rate_10) < 4 || abs_dst(fps_10, vblank_rate_10 / 2) < 3);

				if (!hard_fails && fails < 6 && is_avg_fps_ok)
				{
					if (prevent_preempt_increase_tickets)
					{
						prevent_preempt_increase_tickets--;
					}
					else
					{
						preempt_count = std::min<u64>(preempt_count + 4, max_preempt_count);
					}
				}
				else
				{
					lower_preemption_count();
				}
			}
			// Sudden FPS drop detection
			else if ((fails > 13 || hard_fails > 2 || !(abs_dst(fps_10, 300) < 20 || abs_dst(fps_10, 600) < 30 || abs_dst(fps_10, g_cfg.video.vblank_rate * 10) < 30 || abs_dst(fps_10, g_cfg.video.vblank_rate * 10 / 2) < 20)) && lowered_delay < raised_delay && is_last_frame_a_fail)
			{
				lower_preemption_count();
			}

			perf_log.trace("CPU preemption control: reeval=%d, preempt_count=%llu, fails=%u, hard=%u, avg_frame_time=%llu, highered=%u, lowered=%u, taken=%u", can_reevaluate, preempt_count, fails, hard_fails, avg_frame_time, raised_delay, lowered_delay, ::g_lv2_preempts_taken.load());

			if (hard_measures_taken)
			{
				preempt_fail_old_preempt_count = std::max<u64>(preempt_fail_old_preempt_count, std::min<u64>(frame_times.back().preempt_count, max_preempt_count));
			}
			else if (preempt_fail_old_preempt_count)
			{
				perf_log.error("Lowering current preemption count significantly due to a performance drop, if this issue persists frequently consider lowering max preemptions count to 'new-count' or lower. (old-count=%llu, new-count=%llu)", preempt_fail_old_preempt_count, preempt_count);
				preempt_fail_old_preempt_count = 0;
			}

			const u64 tsc_diff = (current_tsc - frame_times.back().tsc);
			const u64 time_diff = (current_time - frame_times.back().timestamp);
			const u64 preempt_diff = tsc_diff * (1'000'000 / 30) / (time_diff * std::max<u64>(preempt_count, 1ull));

			if (!preempt_count)
			{
				lv2_obj::set_yield_frequency(0, 0);
			}
			else if (abs_dst(fps_10, 300) < 30)
			{
				// Set an upper limit so a backoff technique would be taken if there is a sudden performance drop
				// Allow 4% of no yield to reduce significantly the risk of stutter
				lv2_obj::set_yield_frequency(preempt_diff, current_tsc + (tsc_diff * (1'000'000 * 96 / (30 * 100)) / time_diff));
			}
			else if (abs_dst(fps_10, 600) < 40)
			{
				// 5% for 60fps
				lv2_obj::set_yield_frequency(preempt_diff, current_tsc + (tsc_diff * (1'000'000 * 94 / (60 * 100)) / time_diff));
			}
			else if (abs_dst(fps_10, vblank_rate_10) < 40)
			{
				lv2_obj::set_yield_frequency(preempt_diff, current_tsc + (tsc_diff * (1'000'000 * 94 / (vblank_rate_10 * 10)) / time_diff));
			}
			else if (abs_dst(fps_10, vblank_rate_10 / 2) < 30)
			{
				lv2_obj::set_yield_frequency(preempt_diff, current_tsc + (tsc_diff * (1'000'000 * 96 / ((vblank_rate_10 / 2) * 10)) / time_diff));
			}
			else
			{
				// Undetected case, last 12% is with no yield
				lv2_obj::set_yield_frequency(preempt_diff, current_tsc + (tsc_diff * 88 / 100));
			}

			frame_times.pop_front();
		}
		else
		{
			lv2_obj::set_yield_frequency(0, 0);
		}

		frame_times.push_back(frame_time_t{preempt_count, current_time, current_tsc});
	}

	void vblank_thread::set_thread(std::shared_ptr<named_thread<std::function<void()>>> thread)
	{
		std::swap(m_thread, thread);
	}

	vblank_thread& vblank_thread::operator=(thread_state state)
	{
		if (m_thread)
		{
			*m_thread = state;
		}

		return *this;
	}
} // namespace rsx
